631788654 has 48 divisors (see below), whose sum is σ = 1477702656. Its totient is φ = 179550000.

The previous prime is 631788643. The next prime is 631788671. The reversal of 631788654 is 456887136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50529 + ... + 61779.

It is an arithmetic number, because the mean of its divisors is an integer number (30785472).

Almost surely, 2^631788654 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631788654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (738851328).

631788654 is an abundant number, since it is smaller than the sum of its proper divisors (845914002).

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

631788654 is a wasteful number, since it uses less digits than its factorization.

631788654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11461 (or 11454 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The square root of 631788654 is about 25135.4063822330. The cubic root of 631788654 is about 858.0724152506.

The spelling of 631788654 in words is "six hundred thirty-one million, seven hundred eighty-eight thousand, six hundred fifty-four".