631672064 has 36 divisors (see below), whose sum is σ = 1290221856. Its totient is φ = 308485632.

The previous prime is 631672061. The next prime is 631672121. The reversal of 631672064 is 460276136.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631672061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17684 + ... + 39699.

It is an arithmetic number, because the mean of its divisors is an integer number (35839496).

Almost surely, 2^631672064 is an apocalyptic number.

631672064 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

631672064 is an abundant number, since it is smaller than the sum of its proper divisors (658549792).

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

631672064 is an equidigital number, since it uses as much as digits as its factorization.

631672064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57442 (or 57428 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 631672064 is about 25133.0870368126. The cubic root of 631672064 is about 858.0196292349.

The spelling of 631672064 in words is "six hundred thirty-one million, six hundred seventy-two thousand, sixty-four".