3657665331 has 24 divisors (see below), whose sum is σ = 5352918480. Its totient is φ = 2406375936.

The previous prime is 3657665287. The next prime is 3657665351. The reversal of 3657665331 is 1335667563.

3657665331 is a `hidden beast` number, since 3 + 6 + 57 + 66 + 533 + 1 = 666.

3657665331 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3657665331 - 2⁹ = 3657664819 is a prime.

It is a super-2 number, since 2×3657665331² = 26757031347198679122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3657665351) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 841195 + ... + 845531.

It is an arithmetic number, because the mean of its divisors is an integer number (223038270).

Almost surely, 2^3657665331 is an apocalyptic number.

3657665331 is a deficient number, since it is larger than the sum of its proper divisors (1695253149).

3657665331 is a wasteful number, since it uses less digits than its factorization.

3657665331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555 (or 5552 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 45.

The square root of 3657665331 is about 60478.6353268656. The cubic root of 3657665331 is about 1540.7587944159.

The spelling of 3657665331 in words is "three billion, six hundred fifty-seven million, six hundred sixty-five thousand, three hundred thirty-one".