8640792477 has 8 divisors (see below), whose sum is σ = 12801174080. Its totient is φ = 5760528300.

The previous prime is 8640792473. The next prime is 8640792481. The reversal of 8640792477 is 7742970468.

8640792477 is a `hidden beast` number, since 86 + 4 + 0 + 7 + 92 + 477 = 666.

8640792477 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 (8640792473) and next prime (8640792481).

It is not a de Polignac number, because 8640792477 - 2² = 8640792473 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8640792473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160014649 + ... + 160014702.

It is an arithmetic number, because the mean of its divisors is an integer number (1600146760).

Almost surely, 2^8640792477 is an apocalyptic number.

It is an amenable number.

8640792477 is a deficient number, since it is larger than the sum of its proper divisors (4160381603).

8640792477 is a wasteful number, since it uses less digits than its factorization.

8640792477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320029360 (or 320029354 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 54.

The square root of 8640792477 is about 92955.8630587657. The cubic root of 8640792477 is about 2052.0338709740.

The spelling of 8640792477 in words is "eight billion, six hundred forty million, seven hundred ninety-two thousand, four hundred seventy-seven".