880716645 has 20 divisors (see below), whose sum is σ = 1578766860. Its totient is φ = 469715328.

The previous prime is 880716623. The next prime is 880716737. The reversal of 880716645 is 546617088.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 170067681 + 710648964 = 13041^2 + 26658^2 .

It is not a de Polignac number, because 880716645 - 2⁷ = 880716517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 880716645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1086900 + ... + 1087709.

It is an arithmetic number, because the mean of its divisors is an integer number (78938343).

Almost surely, 2^880716645 is an apocalyptic number.

It is an amenable number.

880716645 is a deficient number, since it is larger than the sum of its proper divisors (698050215).

880716645 is a wasteful number, since it uses less digits than its factorization.

880716645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174626 (or 2174617 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 880716645 is about 29676.8705391926. The cubic root of 880716645 is about 958.5440331847.

It can be divided in two parts, 8807 and 16645, that added together give a palindrome (25452).

The spelling of 880716645 in words is "eight hundred eighty million, seven hundred sixteen thousand, six hundred forty-five".