870242165 has 32 divisors (see below), whose sum is σ = 1152009600. Its totient is φ = 627160320.

The previous prime is 870242119. The next prime is 870242171. The reversal of 870242165 is 561242078.

It is not a de Polignac number, because 870242165 - 2²⁶ = 803133301 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 550346 + ... + 551924.

It is an arithmetic number, because the mean of its divisors is an integer number (36000300).

Almost surely, 2^870242165 is an apocalyptic number.

It is an amenable number.

870242165 is a deficient number, since it is larger than the sum of its proper divisors (281767435).

870242165 is a wasteful number, since it uses less digits than its factorization.

870242165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1797.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 870242165 is about 29499.8672030909. The cubic root of 870242165 is about 954.7288376083.

The spelling of 870242165 in words is "eight hundred seventy million, two hundred forty-two thousand, one hundred sixty-five".