634364879 has 8 divisors (see below), whose sum is σ = 656631360. Its totient is φ = 612124576.

The previous prime is 634364851. The next prime is 634364881. The reversal of 634364879 is 978463436.

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

It is a de Polignac number, because none of the positive numbers 2^k-634364879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634364839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51674 + ... + 62760.

It is an arithmetic number, because the mean of its divisors is an integer number (82078920).

Almost surely, 2^634364879 is an apocalyptic number.

634364879 is a deficient number, since it is larger than the sum of its proper divisors (22266481).

634364879 is a wasteful number, since it uses less digits than its factorization.

634364879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13089.

The product of its digits is 2612736, while the sum is 50.

The square root of 634364879 is about 25186.6011799925. The cubic root of 634364879 is about 859.2371453128.

The spelling of 634364879 in words is "six hundred thirty-four million, three hundred sixty-four thousand, eight hundred seventy-nine".