870022826665 has 4 divisors (see below), whose sum is σ = 1044027392004. Its totient is φ = 696018261328.

The previous prime is 870022826639. The next prime is 870022826681. The reversal of 870022826665 is 566628220078.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 204785211024 + 665237615641 = 452532^2 + 815621^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-870022826665 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87002282662 + ... + 87002282671.

It is an arithmetic number, because the mean of its divisors is an integer number (261006848001).

Almost surely, 2^870022826665 is an apocalyptic number.

It is an amenable number.

870022826665 is a deficient number, since it is larger than the sum of its proper divisors (174004565339).

870022826665 is a wasteful number, since it uses less digits than its factorization.

870022826665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174004565338.

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 870022826665 in words is "eight hundred seventy billion, twenty-two million, eight hundred twenty-six thousand, six hundred sixty-five".