634857860444 has 24 divisors (see below), whose sum is σ = 1145655533568. Its totient is φ = 307658850480.

The previous prime is 634857860407. The next prime is 634857860467. The reversal of 634857860444 is 444068758436.

634857860444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×634857860444³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16373372 + ... + 16412099.

It is an arithmetic number, because the mean of its divisors is an integer number (47735647232).

Almost surely, 2^634857860444 is an apocalyptic number.

It is an amenable number.

634857860444 is a deficient number, since it is larger than the sum of its proper divisors (510797673124).

634857860444 is a wasteful number, since it uses less digits than its factorization.

634857860444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32785625 (or 32785623 counting only the distinct ones).

The product of its (nonzero) digits is 61931520, while the sum is 59.

The spelling of 634857860444 in words is "six hundred thirty-four billion, eight hundred fifty-seven million, eight hundred sixty thousand, four hundred forty-four".