64628632 has 8 divisors (see below), whose sum is σ = 121178700. Its totient is φ = 32314312.

The previous prime is 64628623. The next prime is 64628647. The reversal of 64628632 is 23682646.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 64628591 and 64628600.

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, 4039282 + ... + 4039297.

Almost surely, 2^64628632 is an apocalyptic number.

It is an amenable number.

64628632 is a deficient number, since it is larger than the sum of its proper divisors (56550068).

64628632 is a wasteful number, since it uses less digits than its factorization.

64628632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8078585 (or 8078581 counting only the distinct ones).

The product of its digits is 82944, while the sum is 37.

The square root of 64628632 is about 8039.1934918871. The cubic root of 64628632 is about 401.3053852889.

The spelling of 64628632 in words is "sixty-four million, six hundred twenty-eight thousand, six hundred thirty-two".