631744 has 14 divisors (see below), whose sum is σ = 1253744. Its totient is φ = 315840.

The previous prime is 631739. The next prime is 631751. The reversal of 631744 is 447136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4872 + ... + 4999.

2⁶³¹⁷⁴⁴ is an apocalyptic number.

631744 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

631744 is a deficient number, since it is larger than the sum of its proper divisors (622000).

631744 is an equidigital number, since it uses as much as digits as its factorization.

631744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9883 (or 9873 counting only the distinct ones).

The product of its digits is 2016, while the sum is 25.

The square root of 631744 is about 794.8232507923. The cubic root of 631744 is about 85.8052198960.

The spelling of 631744 in words is "six hundred thirty-one thousand, seven hundred forty-four".