661962 has 16 divisors (see below), whose sum is σ = 1513152. Its totient is φ = 189120.

The previous prime is 661961. The next prime is 661987. The reversal of 661962 is 269166.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (661961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7839 + ... + 7922.

It is an arithmetic number, because the mean of its divisors is an integer number (94572).

2⁶⁶¹⁹⁶² is an apocalyptic number.

661962 is an abundant number, since it is smaller than the sum of its proper divisors (851190).

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

661962 is a wasteful number, since it uses less digits than its factorization.

661962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15773.

The product of its digits is 3888, while the sum is 30.

The square root of 661962 is about 813.6104719090. The cubic root of 661962 is about 87.1520659315.

The spelling of 661962 in words is "six hundred sixty-one thousand, nine hundred sixty-two".