64628636 has 12 divisors (see below), whose sum is σ = 114532320. Its totient is φ = 31905120.

The previous prime is 64628623. The next prime is 64628647. The reversal of 64628636 is 63682646.

It is a junction number, because it is equal to n+sod(n) for n = 64628593 and 64628602.

It is a congruent number.

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, 101945 + ... + 102576.

It is an arithmetic number, because the mean of its divisors is an integer number (9544360).

Almost surely, 2^64628636 is an apocalyptic number.

It is an amenable number.

64628636 is a deficient number, since it is larger than the sum of its proper divisors (49903684).

64628636 is a wasteful number, since it uses less digits than its factorization.

64628636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204604 (or 204602 counting only the distinct ones).

The product of its digits is 248832, while the sum is 41.

The square root of 64628636 is about 8039.1937406683. The cubic root of 64628636 is about 401.3053935681.

The spelling of 64628636 in words is "sixty-four million, six hundred twenty-eight thousand, six hundred thirty-six".