8787664972 has 24 divisors (see below), whose sum is σ = 15873791472. Its totient is φ = 4253932800.

The previous prime is 8787664969. The next prime is 8787664979. The reversal of 8787664972 is 2794667878.

It is not an unprimeable number, because it can be changed into a prime (8787664979) 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, 183033 + ... + 226000.

It is an arithmetic number, because the mean of its divisors is an integer number (661407978).

Almost surely, 2^8787664972 is an apocalyptic number.

8787664972 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

8787664972 is a deficient number, since it is larger than the sum of its proper divisors (7086126500).

8787664972 is a wasteful number, since it uses less digits than its factorization.

8787664972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409209 (or 409207 counting only the distinct ones).

The product of its digits is 56899584, while the sum is 64.

The square root of 8787664972 is about 93742.5462210196. The cubic root of 8787664972 is about 2063.5951431722.

The spelling of 8787664972 in words is "eight billion, seven hundred eighty-seven million, six hundred sixty-four thousand, nine hundred seventy-two".