634676506 has 4 divisors (see below), whose sum is σ = 952014762. Its totient is φ = 317338252.

The previous prime is 634676501. The next prime is 634676519. The reversal of 634676506 is 605676436.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 568107225 + 66569281 = 23835^2 + 8159^2 .

It is not an unprimeable number, because it can be changed into a prime (634676501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158669125 + ... + 158669128.

Almost surely, 2^634676506 is an apocalyptic number.

634676506 is a deficient number, since it is larger than the sum of its proper divisors (317338256).

634676506 is a wasteful number, since it uses less digits than its factorization.

634676506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317338255.

The product of its (nonzero) digits is 544320, while the sum is 43.

The square root of 634676506 is about 25192.7867851097. The cubic root of 634676506 is about 859.3778202195.

The spelling of 634676506 in words is "six hundred thirty-four million, six hundred seventy-six thousand, five hundred six".