8661252884 has 12 divisors (see below), whose sum is σ = 15211134708. Its totient is φ = 4315214400.

The previous prime is 8661252883. The next prime is 8661252913. The reversal of 8661252884 is 4882521668.

It can be written as a sum of positive squares in 2 ways, for example, as 7399440400 + 1261812484 = 86020^2 + 35522^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8661252881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3851747 + ... + 3853994.

It is an arithmetic number, because the mean of its divisors is an integer number (1267594559).

Almost surely, 2^8661252884 is an apocalyptic number.

It is an amenable number.

8661252884 is a deficient number, since it is larger than the sum of its proper divisors (6549881824).

8661252884 is a wasteful number, since it uses less digits than its factorization.

8661252884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7706026 (or 7706024 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 50.

The square root of 8661252884 is about 93065.8524057025. The cubic root of 8661252884 is about 2053.6522546622.

The spelling of 8661252884 in words is "eight billion, six hundred sixty-one million, two hundred fifty-two thousand, eight hundred eighty-four".