2870923561 has 9 divisors (see below), whose sum is σ = 3156291229. Its totient is φ = 2609394700.

The previous prime is 2870923543. The next prime is 2870923591. The reversal of 2870923561 is 1653290782.

The square root of 2870923561 is 53581.

It is a perfect power (a square), and thus also a powerful number.

2870923561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-2870923561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2870923591) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 586956 + ... + 591826.

Almost surely, 2^2870923561 is an apocalyptic number.

2870923561 is the 53581-st square number.

2870923561 is the 26791-st centered octagonal number.

It is an amenable number.

2870923561 is a deficient number, since it is larger than the sum of its proper divisors (285367668).

2870923561 is an frugal number, since it uses more digits than its factorization.

2870923561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9764 (or 4882 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The cubic root of 2870923561 is about 1421.2611227534.

The spelling of 2870923561 in words is "two billion, eight hundred seventy million, nine hundred twenty-three thousand, five hundred sixty-one".