3646664627673 has 16 divisors (see below), whose sum is σ = 4910720959872. Its totient is φ = 2406862560000.

The previous prime is 3646664627657. The next prime is 3646664627713. The reversal of 3646664627673 is 3767264666463.

It is a happy number.

It is not a de Polignac number, because 3646664627673 - 2⁴ = 3646664627657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3646664627623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3755713 + ... + 4625873.

It is an arithmetic number, because the mean of its divisors is an integer number (306920059992).

Almost surely, 2^{3646664627673} is an apocalyptic number.

It is an amenable number.

3646664627673 is a deficient number, since it is larger than the sum of its proper divisors (1264056332199).

3646664627673 is a wasteful number, since it uses less digits than its factorization.

3646664627673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884096.

The product of its digits is 658409472, while the sum is 66.

The spelling of 3646664627673 in words is "three trillion, six hundred forty-six billion, six hundred sixty-four million, six hundred twenty-seven thousand, six hundred seventy-three".