631456 has 24 divisors (see below), whose sum is σ = 1421280. Its totient is φ = 270528.

The previous prime is 631453. The next prime is 631457. The reversal of 631456 is 654136.

It is a self number, because there is not a number n which added to its sum of digits gives 631456.

It is not an unprimeable number, because it can be changed into a prime (631453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1186 + ... + 1633.

It is an arithmetic number, because the mean of its divisors is an integer number (59220).

2⁶³¹⁴⁵⁶ is an apocalyptic number.

It is an amenable number.

631456 is an abundant number, since it is smaller than the sum of its proper divisors (789824).

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

631456 is a wasteful number, since it uses less digits than its factorization.

631456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836 (or 2828 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 631456 is about 794.6420577845. The cubic root of 631456 is about 85.7921789282.

Adding to 631456 its product of digits (2160), we get a square (633616 = 796²).

The spelling of 631456 in words is "six hundred thirty-one thousand, four hundred fifty-six".