870022826681 has 2 divisors, whose sum is σ = 870022826682. Its totient is φ = 870022826680.

The previous prime is 870022826639. The next prime is 870022826689. The reversal of 870022826681 is 186628220078.

It is a happy number.

870022826681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 776365405456 + 93657421225 = 881116^2 + 306035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-870022826681 is a prime.

It is a super-2 number, since 2×870022826681² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (870022826689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435011413340 + 435011413341.

It is an arithmetic number, because the mean of its divisors is an integer number (435011413341).

Almost surely, 2^870022826681 is an apocalyptic number.

It is an amenable number.

870022826681 is a deficient number, since it is larger than the sum of its proper divisors (1).

870022826681 is an equidigital number, since it uses as much as digits as its factorization.

870022826681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1032192, while the sum is 50.

The spelling of 870022826681 in words is "eight hundred seventy billion, twenty-two million, eight hundred twenty-six thousand, six hundred eighty-one".