64890914 has 16 divisors (see below), whose sum is σ = 107987040. Its totient is φ = 28995360.

The previous prime is 64890911. The next prime is 64890919. The reversal of 64890914 is 41909846.

It is not an unprimeable number, because it can be changed into a prime (64890911) 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, 23699 + ... + 26294.

It is an arithmetic number, because the mean of its divisors is an integer number (6749190).

Almost surely, 2^64890914 is an apocalyptic number.

64890914 is a deficient number, since it is larger than the sum of its proper divisors (43096126).

64890914 is a wasteful number, since it uses less digits than its factorization.

64890914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50065.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 64890914 is about 8055.4896809567. The cubic root of 64890914 is about 401.8475243300.

The spelling of 64890914 in words is "sixty-four million, eight hundred ninety thousand, nine hundred fourteen".