634990794 has 16 divisors (see below), whose sum is σ = 1310949120. Its totient is φ = 204835680.

The previous prime is 634990789. The next prime is 634990799. The reversal of 634990794 is 497099436.

It is an interprime number because it is at equal distance from previous prime (634990789) and next prime (634990799).

It is not an unprimeable number, because it can be changed into a prime (634990799) 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, 1706779 + ... + 1707150.

It is an arithmetic number, because the mean of its divisors is an integer number (81934320).

Almost surely, 2^634990794 is an apocalyptic number.

634990794 is an abundant number, since it is smaller than the sum of its proper divisors (675958326).

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

634990794 is a wasteful number, since it uses less digits than its factorization.

634990794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3413965.

The product of its (nonzero) digits is 1469664, while the sum is 51.

The square root of 634990794 is about 25199.0236715632. The cubic root of 634990794 is about 859.5196497255.

The spelling of 634990794 in words is "six hundred thirty-four million, nine hundred ninety thousand, seven hundred ninety-four".