634994 has 8 divisors (see below), whose sum is σ = 978348. Its totient is φ = 308880.

The previous prime is 634979. The next prime is 635003. The reversal of 634994 is 499436.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 619369 + 15625 = 787^2 + 125^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 634994.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4217 + ... + 4364.

2⁶³⁴⁹⁹⁴ is an apocalyptic number.

634994 is a deficient number, since it is larger than the sum of its proper divisors (343354).

634994 is a wasteful number, since it uses less digits than its factorization.

634994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8620.

The product of its digits is 23328, while the sum is 35.

The square root of 634994 is about 796.8651077817. The cubic root of 634994 is about 85.9521096264.

The spelling of 634994 in words is "six hundred thirty-four thousand, nine hundred ninety-four".