631494 has 12 divisors (see below), whose sum is σ = 1368276. Its totient is φ = 210492.

The previous prime is 631487. The next prime is 631507. The reversal of 631494 is 494136.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

631494 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17524 + ... + 17559.

It is an arithmetic number, because the mean of its divisors is an integer number (114023).

2⁶³¹⁴⁹⁴ is an apocalyptic number.

631494 is an abundant number, since it is smaller than the sum of its proper divisors (736782).

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

631494 is a wasteful number, since it uses less digits than its factorization.

631494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35091 (or 35088 counting only the distinct ones).

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

The square root of 631494 is about 794.6659675612. The cubic root of 631494 is about 85.7938998385.

The spelling of 631494 in words is "six hundred thirty-one thousand, four hundred ninety-four".