7664577651 has 6 divisors (see below), whose sum is σ = 11071056620. Its totient is φ = 5109718428.

The previous prime is 7664577643. The next prime is 7664577659. The reversal of 7664577651 is 1567754667.

7664577651 is a `hidden beast` number, since 7 + 6 + 6 + 4 + 577 + 65 + 1 = 666.

7664577651 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (7664577643) and next prime (7664577659).

It is not a de Polignac number, because 7664577651 - 2³ = 7664577643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7664577659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 425809861 + ... + 425809878.

Almost surely, 2^7664577651 is an apocalyptic number.

7664577651 is a deficient number, since it is larger than the sum of its proper divisors (3406478969).

7664577651 is a wasteful number, since it uses less digits than its factorization.

7664577651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851619745 (or 851619742 counting only the distinct ones).

The product of its digits is 7408800, while the sum is 54.

The square root of 7664577651 is about 87547.5736442764. The cubic root of 7664577651 is about 1971.6481222696.

The spelling of 7664577651 in words is "seven billion, six hundred sixty-four million, five hundred seventy-seven thousand, six hundred fifty-one".