86666814 has 32 divisors (see below), whose sum is σ = 207409440. Its totient is φ = 26666496.

The previous prime is 86666807. The next prime is 86666831. The reversal of 86666814 is 41866668.

It is a super-2 number, since 2×86666814² = 15022273297821192, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86666814.

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, 61027 + ... + 62430.

It is an arithmetic number, because the mean of its divisors is an integer number (6481545).

Almost surely, 2^86666814 is an apocalyptic number.

86666814 is an abundant number, since it is smaller than the sum of its proper divisors (120742626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86666814 is a wasteful number, since it uses less digits than its factorization.

86666814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123481 (or 123475 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 86666814 is about 9309.5012755786. The cubic root of 86666814 is about 442.5383821921.

The spelling of 86666814 in words is "eighty-six million, six hundred sixty-six thousand, eight hundred fourteen".