8702721572 has 12 divisors (see below), whose sum is σ = 15438390156. Its totient is φ = 4291752960.

The previous prime is 8702721571. The next prime is 8702721593. The reversal of 8702721572 is 2751272078.

It can be written as a sum of positive squares in 2 ways, for example, as 6693530596 + 2009190976 = 81814^2 + 44824^2 .

It is not an unprimeable number, because it can be changed into a prime (8702721571) 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, 14901629 + ... + 14902212.

It is an arithmetic number, because the mean of its divisors is an integer number (1286532513).

Almost surely, 2^8702721572 is an apocalyptic number.

It is an amenable number.

8702721572 is a deficient number, since it is larger than the sum of its proper divisors (6735668584).

8702721572 is a wasteful number, since it uses less digits than its factorization.

8702721572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29803918 (or 29803916 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 41.

The square root of 8702721572 is about 93288.3785473839. The cubic root of 8702721572 is about 2056.9245568607.

The spelling of 8702721572 in words is "eight billion, seven hundred two million, seven hundred twenty-one thousand, five hundred seventy-two".