8720870577 has 4 divisors (see below), whose sum is σ = 11627827440. Its totient is φ = 5813913716.

The previous prime is 8720870533. The next prime is 8720870581. The reversal of 8720870577 is 7750780278.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8720870577 - 2¹⁴ = 8720854193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8720870527) 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, 1453478427 + ... + 1453478432.

It is an arithmetic number, because the mean of its divisors is an integer number (2906956860).

Almost surely, 2^8720870577 is an apocalyptic number.

It is an amenable number.

8720870577 is a deficient number, since it is larger than the sum of its proper divisors (2906956863).

8720870577 is a wasteful number, since it uses less digits than its factorization.

8720870577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906956862.

The product of its (nonzero) digits is 1536640, while the sum is 51.

The square root of 8720870577 is about 93385.6015507744. The cubic root of 8720870577 is about 2058.3534283989.

The spelling of 8720870577 in words is "eight billion, seven hundred twenty million, eight hundred seventy thousand, five hundred seventy-seven".