3667647643 has 32 divisors (see below), whose sum is σ = 4464916992. Its totient is φ = 2971584000.

The previous prime is 3667647623. The next prime is 3667647671. The reversal of 3667647643 is 3467467663.

It is not a de Polignac number, because 3667647643 - 2⁵ = 3667647611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3667647623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 430180 + ... + 438622.

It is an arithmetic number, because the mean of its divisors is an integer number (139528656).

Almost surely, 2^3667647643 is an apocalyptic number.

3667647643 is a deficient number, since it is larger than the sum of its proper divisors (797269349).

3667647643 is a wasteful number, since it uses less digits than its factorization.

3667647643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8595.

The product of its digits is 9144576, while the sum is 52.

The square root of 3667647643 is about 60561.1066857269. The cubic root of 3667647643 is about 1542.1591744442.

The spelling of 3667647643 in words is "three billion, six hundred sixty-seven million, six hundred forty-seven thousand, six hundred forty-three".