64872256 has 14 divisors (see below), whose sum is σ = 128731010. Its totient is φ = 32436096.

The previous prime is 64872239. The next prime is 64872263. The reversal of 64872256 is 65227846.

It can be written as a sum of positive squares in only one way, i.e., 49000000 + 15872256 = 7000^2 + 3984^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506751 + ... + 506878.

Almost surely, 2^64872256 is an apocalyptic number.

It is an amenable number.

64872256 is a deficient number, since it is larger than the sum of its proper divisors (63858754).

64872256 is a wasteful number, since it uses less digits than its factorization.

64872256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013641 (or 1013631 counting only the distinct ones).

The product of its digits is 161280, while the sum is 40.

The square root of 64872256 is about 8054.3315054696. The cubic root of 64872256 is about 401.8090064063.

The spelling of 64872256 in words is "sixty-four million, eight hundred seventy-two thousand, two hundred fifty-six".