870961697 has 4 divisors (see below), whose sum is σ = 922194756. Its totient is φ = 819728640.

The previous prime is 870961687. The next prime is 870961711. The reversal of 870961697 is 796169078.

It is a happy number.

870961697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 599074576 + 271887121 = 24476^2 + 16489^2 .

It is a cyclic number.

It is not a de Polignac number, because 870961697 - 2⁶ = 870961633 is a prime.

It is a super-2 number, since 2×870961697² = 1517148555282239618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870961657) 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, 25616504 + ... + 25616537.

It is an arithmetic number, because the mean of its divisors is an integer number (230548689).

Almost surely, 2^870961697 is an apocalyptic number.

It is an amenable number.

870961697 is a deficient number, since it is larger than the sum of its proper divisors (51233059).

870961697 is a wasteful number, since it uses less digits than its factorization.

870961697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51233058.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The square root of 870961697 is about 29512.0601957911. The cubic root of 870961697 is about 954.9918941592.

The spelling of 870961697 in words is "eight hundred seventy million, nine hundred sixty-one thousand, six hundred ninety-seven".