3679645391685 has 40 divisors (see below), whose sum is σ = 6596776476576. Its totient is φ = 1962277786080.

The previous prime is 3679645391677. The next prime is 3679645391707. The reversal of 3679645391685 is 5861935469763.

3679645391685 is a `hidden beast` number, since 3 + 6 + 7 + 9 + 6 + 4 + 539 + 1 + 6 + 85 = 666.

It is not a de Polignac number, because 3679645391685 - 2³ = 3679645391677 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3564622 + ... + 4479488.

Almost surely, 2^{3679645391685} is an apocalyptic number.

It is an amenable number.

3679645391685 is a deficient number, since it is larger than the sum of its proper divisors (2917131084891).

3679645391685 is an equidigital number, since it uses as much as digits as its factorization.

3679645391685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924815 (or 924806 counting only the distinct ones).

The product of its digits is 881798400, while the sum is 72.

The spelling of 3679645391685 in words is "three trillion, six hundred seventy-nine billion, six hundred forty-five million, three hundred ninety-one thousand, six hundred eighty-five".