880666609 has 4 divisors (see below), whose sum is σ = 887002480. Its totient is φ = 874330740.

The previous prime is 880666601. The next prime is 880666621. The reversal of 880666609 is 906666088.

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 880666609 - 2³ = 880666601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (880666601) 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, 3167727 + ... + 3168004.

It is an arithmetic number, because the mean of its divisors is an integer number (221750620).

Almost surely, 2^880666609 is an apocalyptic number.

It is an amenable number.

880666609 is a deficient number, since it is larger than the sum of its proper divisors (6335871).

880666609 is a wasteful number, since it uses less digits than its factorization.

880666609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6335870.

The product of its (nonzero) digits is 746496, while the sum is 49.

The square root of 880666609 is about 29676.0275138031. The cubic root of 880666609 is about 958.5258803097.

It can be divided in two parts, 880 and 666609, that added together give a square (667489 = 817²).

The spelling of 880666609 in words is "eight hundred eighty million, six hundred sixty-six thousand, six hundred nine".