64894758 has 16 divisors (see below), whose sum is σ = 130026816. Its totient is φ = 21592040.

The previous prime is 64894757. The next prime is 64894771. The reversal of 64894758 is 85749846.

It is a super-2 number, since 2×64894758² = 8422659231757128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64894758.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64894757) 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, 6228 + ... + 12983.

It is an arithmetic number, because the mean of its divisors is an integer number (8126676).

Almost surely, 2^64894758 is an apocalyptic number.

64894758 is an abundant number, since it is smaller than the sum of its proper divisors (65132058).

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

64894758 is a wasteful number, since it uses less digits than its factorization.

64894758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19779.

The product of its digits is 1935360, while the sum is 51.

The square root of 64894758 is about 8055.7282724779. The cubic root of 64894758 is about 401.8554590381.

The spelling of 64894758 in words is "sixty-four million, eight hundred ninety-four thousand, seven hundred fifty-eight".