641523348 has 48 divisors (see below), whose sum is σ = 1670536000. Its totient is φ = 212899104.

The previous prime is 641523329. The next prime is 641523367. The reversal of 641523348 is 843325146.

641523348 is a `hidden beast` number, since 6 + 415 + 233 + 4 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (641523329) and next prime (641523367).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11763 + ... + 37701.

Almost surely, 2^641523348 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641523348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (835268000).

641523348 is an abundant number, since it is smaller than the sum of its proper divisors (1029012652).

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

641523348 is a wasteful number, since it uses less digits than its factorization.

641523348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26181 (or 26173 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 641523348 is about 25328.3111951824. The cubic root of 641523348 is about 862.4570746123.

The spelling of 641523348 in words is "six hundred forty-one million, five hundred twenty-three thousand, three hundred forty-eight".