64732772 has 24 divisors (see below), whose sum is σ = 128419200. Its totient is φ = 28303776.

The previous prime is 64732763. The next prime is 64732777. The reversal of 64732772 is 27723746.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (64732777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31772 + ... + 33747.

It is an arithmetic number, because the mean of its divisors is an integer number (5350800).

Almost surely, 2^64732772 is an apocalyptic number.

It is an amenable number.

64732772 is a deficient number, since it is larger than the sum of its proper divisors (63686428).

64732772 is a wasteful number, since it uses less digits than its factorization.

64732772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65555 (or 65553 counting only the distinct ones).

The product of its digits is 98784, while the sum is 38.

The square root of 64732772 is about 8045.6679026666. The cubic root of 64732772 is about 401.5208187808.

The spelling of 64732772 in words is "sixty-four million, seven hundred thirty-two thousand, seven hundred seventy-two".