3668737646 has 64 divisors (see below), whose sum is σ = 6611189760. Its totient is φ = 1494339840.

The previous prime is 3668737601. The next prime is 3668737679. The reversal of 3668737646 is 6467378663.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3668737591 and 3668737600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4300556 + ... + 4301408.

It is an arithmetic number, because the mean of its divisors is an integer number (103299840).

Almost surely, 2^3668737646 is an apocalyptic number.

3668737646 is a deficient number, since it is larger than the sum of its proper divisors (2942452114).

3668737646 is a wasteful number, since it uses less digits than its factorization.

3668737646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089.

The product of its digits is 18289152, while the sum is 56.

The square root of 3668737646 is about 60570.1052170128. The cubic root of 3668737646 is about 1542.3119328145.

The spelling of 3668737646 in words is "three billion, six hundred sixty-eight million, seven hundred thirty-seven thousand, six hundred forty-six".