870842653 has 8 divisors (see below), whose sum is σ = 901265400. Its totient is φ = 840446208.

The previous prime is 870842641. The next prime is 870842681. The reversal of 870842653 is 356248078.

It can be written as a sum of positive squares in 4 ways, for example, as 481451364 + 389391289 = 21942^2 + 19733^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 870842653 - 2¹⁷ = 870711581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870842633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80553 + ... + 90721.

It is an arithmetic number, because the mean of its divisors is an integer number (112658175).

Almost surely, 2^870842653 is an apocalyptic number.

It is an amenable number.

870842653 is a deficient number, since it is larger than the sum of its proper divisors (30422747).

870842653 is a wasteful number, since it uses less digits than its factorization.

870842653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13151.

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 870842653 is about 29510.0432564915. The cubic root of 870842653 is about 954.9483823969.

The spelling of 870842653 in words is "eight hundred seventy million, eight hundred forty-two thousand, six hundred fifty-three".