86722867 has 16 divisors (see below), whose sum is σ = 109089792. Its totient is φ = 66971520.

The previous prime is 86722843. The next prime is 86722871. The reversal of 86722867 is 76822768.

It is not a de Polignac number, because 86722867 - 2¹¹ = 86720819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86722817) 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 15 ways as a sum of consecutive naturals, for example, 3718 + ... + 13684.

It is an arithmetic number, because the mean of its divisors is an integer number (6818112).

Almost surely, 2^86722867 is an apocalyptic number.

86722867 is a deficient number, since it is larger than the sum of its proper divisors (22366925).

86722867 is a wasteful number, since it uses less digits than its factorization.

86722867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10098.

The product of its digits is 451584, while the sum is 46.

The square root of 86722867 is about 9312.5113154294. The cubic root of 86722867 is about 442.6337676378.

Subtracting from 86722867 its reverse (76822768), we obtain a palindrome (9900099).

The spelling of 86722867 in words is "eighty-six million, seven hundred twenty-two thousand, eight hundred sixty-seven".