64685976 has 16 divisors (see below), whose sum is σ = 161715000. Its totient is φ = 21561984.

The previous prime is 64685939. The next prime is 64685977. The reversal of 64685976 is 67958646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64685977) 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, 1347601 + ... + 1347648.

Almost surely, 2^64685976 is an apocalyptic number.

It is an amenable number.

64685976 is an abundant number, since it is smaller than the sum of its proper divisors (97029024).

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

64685976 is a wasteful number, since it uses less digits than its factorization.

64685976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2695258 (or 2695254 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 51.

The square root of 64685976 is about 8042.7592280262. The cubic root of 64685976 is about 401.4240409191.

The spelling of 64685976 in words is "sixty-four million, six hundred eighty-five thousand, nine hundred seventy-six".