3677643965 has 4 divisors (see below), whose sum is σ = 4413172764. Its totient is φ = 2942115168.

The previous prime is 3677643947. The next prime is 3677643973. The reversal of 3677643965 is 5693467763.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5693467763 = 181 ⋅31455623.

It can be written as a sum of positive squares in 2 ways, for example, as 794168761 + 2883475204 = 28181^2 + 53698^2 .

It is a cyclic number.

It is not a de Polignac number, because 3677643965 - 2⁶ = 3677643901 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3677643965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367764392 + ... + 367764401.

It is an arithmetic number, because the mean of its divisors is an integer number (1103293191).

Almost surely, 2^3677643965 is an apocalyptic number.

It is an amenable number.

3677643965 is a deficient number, since it is larger than the sum of its proper divisors (735528799).

3677643965 is an equidigital number, since it uses as much as digits as its factorization.

3677643965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735528798.

The product of its digits is 17146080, while the sum is 56.

The square root of 3677643965 is about 60643.5813998481. The cubic root of 3677643965 is about 1543.5589758773.

The spelling of 3677643965 in words is "three billion, six hundred seventy-seven million, six hundred forty-three thousand, nine hundred sixty-five".