64312632 has 48 divisors (see below), whose sum is σ = 184429440. Its totient is φ = 20176128.

The previous prime is 64312627. The next prime is 64312637. The reversal of 64312632 is 23621346.

64312632 is a `hidden beast` number, since 643 + 12 + 6 + 3 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (64312627) and next prime (64312637).

It is a super-2 number, since 2×64312632² = 8272229269534848, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 64312596 and 64312605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64312637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25048 + ... + 27495.

It is an arithmetic number, because the mean of its divisors is an integer number (3842280).

Almost surely, 2^64312632 is an apocalyptic number.

It is an amenable number.

64312632 is an abundant number, since it is smaller than the sum of its proper divisors (120116808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64312632 is a wasteful number, since it uses less digits than its factorization.

64312632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52572 (or 52565 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 64312632 is about 8019.5156961004. The cubic root of 64312632 is about 400.6502590019.

Adding to 64312632 its reverse (23621346), we get a palindrome (87933978).

The spelling of 64312632 in words is "sixty-four million, three hundred twelve thousand, six hundred thirty-two".