64869712 has 20 divisors (see below), whose sum is σ = 126349056. Its totient is φ = 32263520.

The previous prime is 64869703. The next prime is 64869719. The reversal of 64869712 is 21796846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64869719) 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, 7558 + ... + 13669.

Almost surely, 2^64869712 is an apocalyptic number.

It is an amenable number.

64869712 is a deficient number, since it is larger than the sum of its proper divisors (61479344).

64869712 is a wasteful number, since it uses less digits than its factorization.

64869712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21426 (or 21420 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 64869712 is about 8054.1735764757. The cubic root of 64869712 is about 401.8037539530.

The spelling of 64869712 in words is "sixty-four million, eight hundred sixty-nine thousand, seven hundred twelve".