3745647765 has 20 divisors (see below), whose sum is σ = 6714421164. Its totient is φ = 1997678592.

The previous prime is 3745647733. The next prime is 3745647779. The reversal of 3745647765 is 5677465473.

It is a happy number.

3745647765 is a `hidden beast` number, since 3 + 7 + 4 + 564 + 7 + 76 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 442387089 + 3303260676 = 21033^2 + 57474^2 .

It is not a de Polignac number, because 3745647765 - 2⁵ = 3745647733 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4623852 + ... + 4624661.

Almost surely, 2^3745647765 is an apocalyptic number.

It is an amenable number.

3745647765 is a deficient number, since it is larger than the sum of its proper divisors (2968773399).

3745647765 is an equidigital number, since it uses as much as digits as its factorization.

3745647765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9248530 (or 9248521 counting only the distinct ones).

The product of its digits is 14817600, while the sum is 54.

The square root of 3745647765 is about 61201.6974029316. The cubic root of 3745647765 is about 1553.0149800357.

The spelling of 3745647765 in words is "three billion, seven hundred forty-five million, six hundred forty-seven thousand, seven hundred sixty-five".