872736686 has 32 divisors (see below), whose sum is σ = 1395491328. Its totient is φ = 408754080.

The previous prime is 872736677. The next prime is 872736751. The reversal of 872736686 is 686637278.

872736686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 223991 + ... + 227853.

It is an arithmetic number, because the mean of its divisors is an integer number (43609104).

Almost surely, 2^872736686 is an apocalyptic number.

872736686 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

872736686 is a deficient number, since it is larger than the sum of its proper divisors (522754642).

872736686 is a wasteful number, since it uses less digits than its factorization.

872736686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4016.

The product of its digits is 4064256, while the sum is 53.

The square root of 872736686 is about 29542.1171550043. The cubic root of 872736686 is about 955.6402004690.

The spelling of 872736686 in words is "eight hundred seventy-two million, seven hundred thirty-six thousand, six hundred eighty-six".