634694 has 16 divisors (see below), whose sum is σ = 1019520. Its totient is φ = 295680.

The previous prime is 634687. The next prime is 634703. The reversal of 634694 is 496436.

It is a self number, because there is not a number n which added to its sum of digits gives 634694.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 634694.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1622 + ... + 1974.

It is an arithmetic number, because the mean of its divisors is an integer number (63720).

2⁶³⁴⁶⁹⁴ is an apocalyptic number.

634694 is a deficient number, since it is larger than the sum of its proper divisors (384826).

634694 is a wasteful number, since it uses less digits than its factorization.

634694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415.

The product of its digits is 15552, while the sum is 32.

The square root of 634694 is about 796.6768479126. The cubic root of 634694 is about 85.9385716010.

The spelling of 634694 in words is "six hundred thirty-four thousand, six hundred ninety-four".