3656747456564 has 12 divisors (see below), whose sum is σ = 6415266425988. Its totient is φ = 1823814192000.

The previous prime is 3656747456561. The next prime is 3656747456581. The reversal of 3656747456564 is 4656547476563.

It can be written as a sum of positive squares in 2 ways, for example, as 2846333403664 + 810414052900 = 1687108^2 + 900230^2 .

It is a super-2 number, since 2×3656747456564² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3656747456494 and 3656747456503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3656747456561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1139882267 + ... + 1139885474.

It is an arithmetic number, because the mean of its divisors is an integer number (534605535499).

Almost surely, 2^{3656747456564} is an apocalyptic number.

It is an amenable number.

3656747456564 is a deficient number, since it is larger than the sum of its proper divisors (2758518969424).

3656747456564 is a wasteful number, since it uses less digits than its factorization.

3656747456564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279768146 (or 2279768144 counting only the distinct ones).

The product of its digits is 1524096000, while the sum is 68.

The spelling of 3656747456564 in words is "three trillion, six hundred fifty-six billion, seven hundred forty-seven million, four hundred fifty-six thousand, five hundred sixty-four".