64231732 has 12 divisors (see below), whose sum is σ = 117292896. Its totient is φ = 30719480.

The previous prime is 64231711. The next prime is 64231733. The reversal of 64231732 is 23713246.

It is a self number, because there is not a number n which added to its sum of digits gives 64231732.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64231733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348994 + ... + 349177.

It is an arithmetic number, because the mean of its divisors is an integer number (9774408).

Almost surely, 2^64231732 is an apocalyptic number.

It is an amenable number.

64231732 is a deficient number, since it is larger than the sum of its proper divisors (53061164).

64231732 is a wasteful number, since it uses less digits than its factorization.

64231732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698198 (or 698196 counting only the distinct ones).

The product of its digits is 6048, while the sum is 28.

The square root of 64231732 is about 8014.4701633982. The cubic root of 64231732 is about 400.4821934900.

Adding to 64231732 its reverse (23713246), we get a palindrome (87944978).

The spelling of 64231732 in words is "sixty-four million, two hundred thirty-one thousand, seven hundred thirty-two".