634955 has 12 divisors (see below), whose sum is σ = 794352. Its totient is φ = 487200.

The previous prime is 634943. The next prime is 634969. The reversal of 634955 is 559436.

It is a happy number.

It is not a de Polignac number, because 634955 - 2⁴ = 634939 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4130 + ... + 4280.

It is an arithmetic number, because the mean of its divisors is an integer number (66196).

2⁶³⁴⁹⁵⁵ is an apocalyptic number.

634955 is a deficient number, since it is larger than the sum of its proper divisors (159397).

634955 is a wasteful number, since it uses less digits than its factorization.

634955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 185 counting only the distinct ones).

The product of its digits is 16200, while the sum is 32.

The square root of 634955 is about 796.8406365140. The cubic root of 634955 is about 85.9503499242.

The spelling of 634955 in words is "six hundred thirty-four thousand, nine hundred fifty-five".