634879794 has 16 divisors (see below), whose sum is σ = 1336589280. Its totient is φ = 200488320.

The previous prime is 634879789. The next prime is 634879811. The reversal of 634879794 is 497978436.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

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, 2784447 + ... + 2784674.

It is an arithmetic number, because the mean of its divisors is an integer number (83536830).

Almost surely, 2^634879794 is an apocalyptic number.

634879794 is an abundant number, since it is smaller than the sum of its proper divisors (701709486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634879794 is a wasteful number, since it uses less digits than its factorization.

634879794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5569145.

The product of its digits is 9144576, while the sum is 57.

The square root of 634879794 is about 25196.8211090209. The cubic root of 634879794 is about 859.4695638336.

The spelling of 634879794 in words is "six hundred thirty-four million, eight hundred seventy-nine thousand, seven hundred ninety-four".