877330665 has 12 divisors (see below), whose sum is σ = 1520706564. Its totient is φ = 467909664.

The previous prime is 877330661. The next prime is 877330673. The reversal of 877330665 is 566033778.

It can be written as a sum of positive squares in 2 ways, for example, as 586559961 + 290770704 = 24219^2 + 17052^2 .

It is not a de Polignac number, because 877330665 - 2² = 877330661 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 19496237 = 877330665 / (8 + 7 + 7 + 3 + 3 + 0 + 6 + 6 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 877330665.

It is not an unprimeable number, because it can be changed into a prime (877330661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9748074 + ... + 9748163.

It is an arithmetic number, because the mean of its divisors is an integer number (126725547).

Almost surely, 2^877330665 is an apocalyptic number.

It is an amenable number.

877330665 is a deficient number, since it is larger than the sum of its proper divisors (643375899).

877330665 is a wasteful number, since it uses less digits than its factorization.

877330665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19496248 (or 19496245 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The square root of 877330665 is about 29619.7681456152. The cubic root of 877330665 is about 957.3140578835.

The spelling of 877330665 in words is "eight hundred seventy-seven million, three hundred thirty thousand, six hundred sixty-five".