868086505 has 32 divisors (see below), whose sum is σ = 1242154368. Its totient is φ = 574041600.

The previous prime is 868086503. The next prime is 868086517. The reversal of 868086505 is 505680868.

It is not a de Polignac number, because 868086505 - 2¹ = 868086503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (868086503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38845 + ... + 56965.

It is an arithmetic number, because the mean of its divisors is an integer number (38817324).

Almost surely, 2^868086505 is an apocalyptic number.

It is an amenable number.

868086505 is a deficient number, since it is larger than the sum of its proper divisors (374067863).

868086505 is a wasteful number, since it uses less digits than its factorization.

868086505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18217.

The product of its (nonzero) digits is 460800, while the sum is 46.

The square root of 868086505 is about 29463.3077742469. The cubic root of 868086505 is about 953.9398723727.

The spelling of 868086505 in words is "eight hundred sixty-eight million, eighty-six thousand, five hundred five".