631377552 has 160 divisors (see below), whose sum is σ = 1896628608. Its totient is φ = 179232768.

The previous prime is 631377547. The next prime is 631377599. The reversal of 631377552 is 255773136.

It is a super-2 number, since 2×631377552² = 797275226339025408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 631377552.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 561663 + ... + 562785.

Almost surely, 2^631377552 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 631377552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (948314304).

631377552 is an abundant number, since it is smaller than the sum of its proper divisors (1265251056).

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

631377552 is a wasteful number, since it uses less digits than its factorization.

631377552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217 (or 1211 counting only the distinct ones).

The product of its digits is 132300, while the sum is 39.

The square root of 631377552 is about 25127.2273042610. The cubic root of 631377552 is about 857.8862602637.

The spelling of 631377552 in words is "six hundred thirty-one million, three hundred seventy-seven thousand, five hundred fifty-two".