631160640 has 448 divisors, whose sum is σ = 2523744000. Its totient is φ = 147087360.

The previous prime is 631160633. The next prime is 631160653. The reversal of 631160640 is 46061136.

631160640 is a `hidden beast` number, since 6 + 3 + 1 + 16 + 0 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2756046 + ... + 2756274.

Almost surely, 2^631160640 is an apocalyptic number.

631160640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631160640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1261872000).

631160640 is an abundant number, since it is smaller than the sum of its proper divisors (1892583360).

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

631160640 is a wasteful number, since it uses less digits than its factorization.

631160640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 631160640 is about 25122.9106593961. The cubic root of 631160640 is about 857.7880057206.

The spelling of 631160640 in words is "six hundred thirty-one million, one hundred sixty thousand, six hundred forty".