64690956 has 54 divisors (see below), whose sum is σ = 179753756. Its totient is φ = 19602000.

The previous prime is 64690943. The next prime is 64690961. The reversal of 64690956 is 65909646.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3070 + ... + 11781.

Almost surely, 2^64690956 is an apocalyptic number.

64690956 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

64690956 is an abundant number, since it is smaller than the sum of its proper divisors (115062800).

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

64690956 is a wasteful number, since it uses less digits than its factorization.

64690956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14883 (or 14867 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 64690956 is about 8043.0688173110. The cubic root of 64690956 is about 401.4343421752.

The spelling of 64690956 in words is "sixty-four million, six hundred ninety thousand, nine hundred fifty-six".