3634123664 has 20 divisors (see below), whose sum is σ = 7042929804. Its totient is φ = 1816593408.

The previous prime is 3634123657. The next prime is 3634123681. The reversal of 3634123664 is 4663214363.

It can be written as a sum of positive squares in 2 ways, for example, as 3253561600 + 380562064 = 57040^2 + 19508^2 .

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, 39644 + ... + 94020.

Almost surely, 2^3634123664 is an apocalyptic number.

It is an amenable number.

3634123664 is a deficient number, since it is larger than the sum of its proper divisors (3408806140).

3634123664 is a wasteful number, since it uses less digits than its factorization.

3634123664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58562 (or 58556 counting only the distinct ones).

The product of its digits is 186624, while the sum is 38.

The square root of 3634123664 is about 60283.6931848074. The cubic root of 3634123664 is about 1537.4461049167.

The spelling of 3634123664 in words is "three billion, six hundred thirty-four million, one hundred twenty-three thousand, six hundred sixty-four".