634063406404 has 12 divisors (see below), whose sum is σ = 1109640000700. Its totient is φ = 317023406208.

The previous prime is 634063406387. The next prime is 634063406413. The reversal of 634063406404 is 404604360436.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 134923982400 + 499139424004 = 367320^2 + 706498^2 .

It is a super-2 number, since 2×634063406404² (a number of 24 digits) contains 22 as substring.

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, 1900689 + ... + 2209240.

Almost surely, 2^634063406404 is an apocalyptic number.

It is an amenable number.

634063406404 is a deficient number, since it is larger than the sum of its proper divisors (475576594296).

634063406404 is a wasteful number, since it uses less digits than its factorization.

634063406404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4148502 (or 4148500 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 40.

The spelling of 634063406404 in words is "six hundred thirty-four billion, sixty-three million, four hundred six thousand, four hundred four".