86615889 has 16 divisors (see below), whose sum is σ = 124396800. Its totient is φ = 53431056.

The previous prime is 86615873. The next prime is 86615899. The reversal of 86615889 is 98851668.

It is not a de Polignac number, because 86615889 - 2⁴ = 86615873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86615819) 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, 15219 + ... + 20120.

It is an arithmetic number, because the mean of its divisors is an integer number (7774800).

Almost surely, 2^86615889 is an apocalyptic number.

It is an amenable number.

86615889 is a deficient number, since it is larger than the sum of its proper divisors (37780911).

86615889 is a wasteful number, since it uses less digits than its factorization.

86615889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35404.

The product of its digits is 829440, while the sum is 51.

The square root of 86615889 is about 9306.7657647542. The cubic root of 86615889 is about 442.4516874063.

The spelling of 86615889 in words is "eighty-six million, six hundred fifteen thousand, eight hundred eighty-nine".