64331732 has 6 divisors (see below), whose sum is σ = 112580538. Its totient is φ = 32165864.

The previous prime is 64331731. The next prime is 64331749. The reversal of 64331732 is 23713346.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 33016516 + 31315216 = 5746^2 + 5596^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64331695 and 64331704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64331731) 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 as a sum of consecutive naturals, namely, 8041463 + ... + 8041470.

It is an arithmetic number, because the mean of its divisors is an integer number (18763423).

Almost surely, 2^64331732 is an apocalyptic number.

It is an amenable number.

64331732 is a deficient number, since it is larger than the sum of its proper divisors (48248806).

64331732 is a wasteful number, since it uses less digits than its factorization.

64331732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16082937 (or 16082935 counting only the distinct ones).

The product of its digits is 9072, while the sum is 29.

The square root of 64331732 is about 8020.7064526761. The cubic root of 64331732 is about 400.6899176832.

The spelling of 64331732 in words is "sixty-four million, three hundred thirty-one thousand, seven hundred thirty-two".