634956 has 24 divisors (see below), whose sum is σ = 1693440. Its totient is φ = 181392.

The previous prime is 634943. The next prime is 634969. The reversal of 634956 is 659436.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (634943) and next prime (634969).

It is an unprimeable number.

634956 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 7 ways as a sum of consecutive naturals, for example, 3696 + ... + 3863.

It is an arithmetic number, because the mean of its divisors is an integer number (70560).

2⁶³⁴⁹⁵⁶ is an apocalyptic number.

It is an amenable number.

634956 is an abundant number, since it is smaller than the sum of its proper divisors (1058484).

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

634956 is a wasteful number, since it uses less digits than its factorization.

634956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7573 (or 7571 counting only the distinct ones).

The product of its digits is 19440, while the sum is 33.

The square root of 634956 is about 796.8412639918. The cubic root of 634956 is about 85.9503950457.

Subtracting from 634956 its product of digits (19440), we obtain a palindrome (615516).

The spelling of 634956 in words is "six hundred thirty-four thousand, nine hundred fifty-six".