8007863661 has 24 divisors (see below), whose sum is σ = 13800402240. Its totient is φ = 4575921336.

The previous prime is 8007863659. The next prime is 8007863663. The reversal of 8007863661 is 1663687008.

8007863661 is a `hidden beast` number, since 8 + 0 + 0 + 7 + 8 + 636 + 6 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (8007863659) and next prime (8007863663).

It is not a de Polignac number, because 8007863661 - 2¹ = 8007863659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8007863663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3025081 + ... + 3027726.

It is an arithmetic number, because the mean of its divisors is an integer number (575016760).

Almost surely, 2^8007863661 is an apocalyptic number.

It is an amenable number.

8007863661 is a deficient number, since it is larger than the sum of its proper divisors (5792538579).

8007863661 is a wasteful number, since it uses less digits than its factorization.

8007863661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6052830 (or 6052817 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 8007863661 is about 89486.6675041595. The cubic root of 8007863661 is about 2000.6550904881.

The spelling of 8007863661 in words is "eight billion, seven million, eight hundred sixty-three thousand, six hundred sixty-one".