634907 has 8 divisors (see below), whose sum is σ = 781536. Its totient is φ = 502272.

The previous prime is 634903. The next prime is 634927. The reversal of 634907 is 709436.

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

It is a cyclic number.

It is not a de Polignac number, because 634907 - 2² = 634903 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 634907.

It is not an unprimeable number, because it can be changed into a prime (634901) 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, 3398 + ... + 3579.

It is an arithmetic number, because the mean of its divisors is an integer number (97692).

2⁶³⁴⁹⁰⁷ is an apocalyptic number.

634907 is a deficient number, since it is larger than the sum of its proper divisors (146629).

634907 is a wasteful number, since it uses less digits than its factorization.

634907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6997.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 634907 is about 796.8105169989. The cubic root of 634907 is about 85.9481840381.

Subtracting 634907 from its reverse (709436), we obtain a square (74529 = 273²).

The spelling of 634907 in words is "six hundred thirty-four thousand, nine hundred seven".