64627744 has 24 divisors (see below), whose sum is σ = 134721468. Its totient is φ = 30412800.

The previous prime is 64627729. The next prime is 64627757. The reversal of 64627744 is 44772646.

It can be written as a sum of positive squares in 2 ways, for example, as 64192144 + 435600 = 8012^2 + 660^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64627697 and 64627706.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58857 + ... + 59944.

Almost surely, 2^64627744 is an apocalyptic number.

It is an amenable number.

64627744 is an abundant number, since it is smaller than the sum of its proper divisors (70093724).

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

64627744 is a wasteful number, since it uses less digits than its factorization.

64627744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118828 (or 118820 counting only the distinct ones).

The product of its digits is 225792, while the sum is 40.

The square root of 64627744 is about 8039.1382622766. The cubic root of 64627744 is about 401.3035472965.

The spelling of 64627744 in words is "sixty-four million, six hundred twenty-seven thousand, seven hundred forty-four".