86665966 has 16 divisors (see below), whose sum is σ = 138259440. Its totient is φ = 40602240.

The previous prime is 86665961. The next prime is 86665967. The reversal of 86665966 is 66956668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86665961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2221 + ... + 13351.

It is an arithmetic number, because the mean of its divisors is an integer number (8641215).

Almost surely, 2^86665966 is an apocalyptic number.

86665966 is a deficient number, since it is larger than the sum of its proper divisors (51593474).

86665966 is a wasteful number, since it uses less digits than its factorization.

86665966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11379.

The product of its digits is 2799360, while the sum is 52.

The square root of 86665966 is about 9309.4557305999. The cubic root of 86665966 is about 442.5369388338.

The spelling of 86665966 in words is "eighty-six million, six hundred sixty-five thousand, nine hundred sixty-six".