631994 has 16 divisors (see below), whose sum is σ = 1080000. Its totient is φ = 274560.

The previous prime is 631993. The next prime is 632029. The reversal of 631994 is 499136.

631994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 631994.

It is not an unprimeable number, because it can be changed into a prime (631991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119 + ... + 1130.

It is an arithmetic number, because the mean of its divisors is an integer number (67500).

2⁶³¹⁹⁹⁴ is an apocalyptic number.

631994 is a deficient number, since it is larger than the sum of its proper divisors (448006).

631994 is a wasteful number, since it uses less digits than its factorization.

631994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285.

The product of its digits is 5832, while the sum is 32.

The square root of 631994 is about 794.9805029056. The cubic root of 631994 is about 85.8165369675.

The spelling of 631994 in words is "six hundred thirty-one thousand, nine hundred ninety-four".