64689116 has 12 divisors (see below), whose sum is σ = 114478560. Its totient is φ = 31980960.

The previous prime is 64689113. The next prime is 64689139. The reversal of 64689116 is 61198646.

It is a super-2 number, since 2×64689116² = 8369363457722912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64689113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90500 + ... + 91211.

It is an arithmetic number, because the mean of its divisors is an integer number (9539880).

Almost surely, 2^64689116 is an apocalyptic number.

It is an amenable number.

64689116 is a deficient number, since it is larger than the sum of its proper divisors (49789444).

64689116 is a wasteful number, since it uses less digits than its factorization.

64689116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181804 (or 181802 counting only the distinct ones).

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

The square root of 64689116 is about 8042.9544322966. The cubic root of 64689116 is about 401.4305361502.

The spelling of 64689116 in words is "sixty-four million, six hundred eighty-nine thousand, one hundred sixteen".