3639206764 has 6 divisors (see below), whose sum is σ = 6368611844. Its totient is φ = 1819603380.

The previous prime is 3639206759. The next prime is 3639206771. The reversal of 3639206764 is 4676029363.

It is a super-2 number, since 2×3639206764² = 26487651742286703392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454900842 + ... + 454900849.

Almost surely, 2^3639206764 is an apocalyptic number.

It is an amenable number.

3639206764 is a deficient number, since it is larger than the sum of its proper divisors (2729405080).

3639206764 is a wasteful number, since it uses less digits than its factorization.

3639206764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909801695 (or 909801693 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 46.

The square root of 3639206764 is about 60325.8382784690. The cubic root of 3639206764 is about 1538.1625868163.

The spelling of 3639206764 in words is "three billion, six hundred thirty-nine million, two hundred six thousand, seven hundred sixty-four".