868106817 has 24 divisors (see below), whose sum is σ = 1297289448. Its totient is φ = 559008000.

The previous prime is 868106809. The next prime is 868106831. The reversal of 868106817 is 718601868.

It can be written as a sum of positive squares in 4 ways, for example, as 8503056 + 859603761 = 2916^2 + 29319^2 .

It is not a de Polignac number, because 868106817 - 2³ = 868106809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (868116817) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25623 + ... + 48915.

It is an arithmetic number, because the mean of its divisors is an integer number (54053727).

Almost surely, 2^868106817 is an apocalyptic number.

It is an amenable number.

868106817 is a deficient number, since it is larger than the sum of its proper divisors (429182631).

868106817 is a wasteful number, since it uses less digits than its factorization.

868106817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23441 (or 23438 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 868106817 is about 29463.6524721563. The cubic root of 868106817 is about 953.9473125973.

The spelling of 868106817 in words is "eight hundred sixty-eight million, one hundred six thousand, eight hundred seventeen".