64628624 has 20 divisors (see below), whose sum is σ = 127582236. Its totient is φ = 31704192.

The previous prime is 64628623. The next prime is 64628647. The reversal of 64628624 is 42682646.

64628624 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 44089600 + 20539024 = 6640^2 + 4532^2 .

It is not an unprimeable number, because it can be changed into a prime (64628621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37259 + ... + 38954.

Almost surely, 2^64628624 is an apocalyptic number.

It is an amenable number.

64628624 is a deficient number, since it is larger than the sum of its proper divisors (62953612).

64628624 is a wasteful number, since it uses less digits than its factorization.

64628624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76274 (or 76268 counting only the distinct ones).

The product of its digits is 110592, while the sum is 38.

The square root of 64628624 is about 8039.1929943247. The cubic root of 64628624 is about 401.3053687305.

The spelling of 64628624 in words is "sixty-four million, six hundred twenty-eight thousand, six hundred twenty-four".