868904185 has 16 divisors (see below), whose sum is σ = 1069583760. Its totient is φ = 677237760.

The previous prime is 868904167. The next prime is 868904203. The reversal of 868904185 is 581409868.

It is an interprime number because it is at equal distance from previous prime (868904167) and next prime (868904203).

It can be written as a sum of positive squares in 8 ways, for example, as 433430761 + 435473424 = 20819^2 + 20868^2 .

It is not a de Polignac number, because 868904185 - 2¹⁵ = 868871417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172381 + ... + 177349.

It is an arithmetic number, because the mean of its divisors is an integer number (66848985).

Almost surely, 2^868904185 is an apocalyptic number.

It is an amenable number.

868904185 is a deficient number, since it is larger than the sum of its proper divisors (200679575).

868904185 is a wasteful number, since it uses less digits than its factorization.

868904185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5868.

The product of its (nonzero) digits is 552960, while the sum is 49.

The square root of 868904185 is about 29477.1807505399. The cubic root of 868904185 is about 954.2392944427.

The spelling of 868904185 in words is "eight hundred sixty-eight million, nine hundred four thousand, one hundred eighty-five".