64648732 has 24 divisors (see below), whose sum is σ = 114514400. Its totient is φ = 31933440.

The previous prime is 64648721. The next prime is 64648741. The reversal of 64648732 is 23784646.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191668 + ... + 192004.

Almost surely, 2^64648732 is an apocalyptic number.

It is an amenable number.

64648732 is a deficient number, since it is larger than the sum of its proper divisors (49865668).

64648732 is a wasteful number, since it uses less digits than its factorization.

64648732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781 (or 779 counting only the distinct ones).

The product of its digits is 193536, while the sum is 40.

The square root of 64648732 is about 8040.4435201051. The cubic root of 64648732 is about 401.3469839938.

The spelling of 64648732 in words is "sixty-four million, six hundred forty-eight thousand, seven hundred thirty-two".