86615972 has 6 divisors (see below), whose sum is σ = 151577958. Its totient is φ = 43307984.

The previous prime is 86615951. The next prime is 86615983. The reversal of 86615972 is 27951668.

It can be written as a sum of positive squares in only one way, i.e., 59845696 + 26770276 = 7736^2 + 5174^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10826993 + ... + 10827000.

It is an arithmetic number, because the mean of its divisors is an integer number (25262993).

Almost surely, 2^86615972 is an apocalyptic number.

It is an amenable number.

86615972 is a deficient number, since it is larger than the sum of its proper divisors (64961986).

86615972 is a wasteful number, since it uses less digits than its factorization.

86615972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21653997 (or 21653995 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 86615972 is about 9306.7702238747. The cubic root of 86615972 is about 442.4518287332.

The spelling of 86615972 in words is "eighty-six million, six hundred fifteen thousand, nine hundred seventy-two".