64694256 has 40 divisors (see below), whose sum is σ = 182321664. Its totient is φ = 19604160.

The previous prime is 64694249. The next prime is 64694263. The reversal of 64694256 is 65249646.

It is an interprime number because it is at equal distance from previous prime (64694249) and next prime (64694263).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60736 + ... + 61791.

Almost surely, 2^64694256 is an apocalyptic number.

64694256 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

64694256 is an abundant number, since it is smaller than the sum of its proper divisors (117627408).

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

64694256 is a wasteful number, since it uses less digits than its factorization.

64694256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122549 (or 122543 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The square root of 64694256 is about 8043.2739602726. The cubic root of 64694256 is about 401.4411680176.

The spelling of 64694256 in words is "sixty-four million, six hundred ninety-four thousand, two hundred fifty-six".