634634886 has 8 divisors (see below), whose sum is σ = 1269269784. Its totient is φ = 211544960.

The previous prime is 634634867. The next prime is 634634947. The reversal of 634634886 is 688436436.

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

634634886 is an admirable number.

It is a super-2 number, since 2×634634886² = 805522877056465992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52886235 + ... + 52886246.

It is an arithmetic number, because the mean of its divisors is an integer number (158658723).

Almost surely, 2^634634886 is an apocalyptic number.

634634886 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

634634886 is a wasteful number, since it uses less digits than its factorization.

634634886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105772486.

The product of its digits is 1990656, while the sum is 48.

The square root of 634634886 is about 25191.9607414747. The cubic root of 634634886 is about 859.3590347509.

The spelling of 634634886 in words is "six hundred thirty-four million, six hundred thirty-four thousand, eight hundred eighty-six".