631768696 has 64 divisors (see below), whose sum is σ = 1365840000. Its totient is φ = 271506816.

The previous prime is 631768667. The next prime is 631768699. The reversal of 631768696 is 696867136.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631768699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113875 + ... + 119293.

It is an arithmetic number, because the mean of its divisors is an integer number (21341250).

Almost surely, 2^631768696 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 631768696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (682920000).

631768696 is an abundant number, since it is smaller than the sum of its proper divisors (734071304).

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

631768696 is a wasteful number, since it uses less digits than its factorization.

631768696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5516 (or 5512 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 52.

The square root of 631768696 is about 25135.0093694035. The cubic root of 631768696 is about 858.0633797451.

The spelling of 631768696 in words is "six hundred thirty-one million, seven hundred sixty-eight thousand, six hundred ninety-six".