631267164 has 108 divisors (see below), whose sum is σ = 1763358688. Its totient is φ = 190270080.

The previous prime is 631267159. The next prime is 631267183. The reversal of 631267164 is 461762136.

It is a happy number.

631267164 is a `hidden beast` number, since 631 + 2 + 6 + 7 + 16 + 4 = 666.

631267164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1363197 + ... + 1363659.

Almost surely, 2^631267164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631267164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (881679344).

631267164 is an abundant number, since it is smaller than the sum of its proper divisors (1132091524).

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

631267164 is a wasteful number, since it uses less digits than its factorization.

631267164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808 (or 792 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 631267164 is about 25125.0306268470. The cubic root of 631267164 is about 857.8362606675.

The spelling of 631267164 in words is "six hundred thirty-one million, two hundred sixty-seven thousand, one hundred sixty-four".