641160 has 96 divisors (see below), whose sum is σ = 2260440. Its totient is φ = 156672.

The previous prime is 641143. The next prime is 641167. The reversal of 641160 is 61146.

It can be written as a sum of positive squares in 4 ways, for example, as 427716 + 213444 = 654^2 + 462^2 .

It is a super-2 number, since 2×641160² = 822172291200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 641160.

It is not an unprimeable number, because it can be changed into a prime (641167) by changing a digit.

641160 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4612 + ... + 4748.

2⁶⁴¹¹⁶⁰ is an apocalyptic number.

641160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1130220).

641160 is an abundant number, since it is smaller than the sum of its proper divisors (1619280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641160 is a wasteful number, since it uses less digits than its factorization.

641160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 641160 is about 800.7246717818. The cubic root of 641160 is about 86.2294216817.

The spelling of 641160 in words is "six hundred forty-one thousand, one hundred sixty".