634872336 has 40 divisors (see below), whose sum is σ = 1874385984. Its totient is φ = 181392000.

The previous prime is 634872317. The next prime is 634872347. The reversal of 634872336 is 633278436.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 944415 + ... + 945086.

Almost surely, 2^634872336 is an apocalyptic number.

It is an amenable number.

634872336 is an abundant number, since it is smaller than the sum of its proper divisors (1239513648).

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

634872336 is a wasteful number, since it uses less digits than its factorization.

634872336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889519 (or 1889513 counting only the distinct ones).

The product of its digits is 435456, while the sum is 42.

The square root of 634872336 is about 25196.6731137267. The cubic root of 634872336 is about 859.4661983938.

The spelling of 634872336 in words is "six hundred thirty-four million, eight hundred seventy-two thousand, three hundred thirty-six".