86666670 has 24 divisors (see below), whose sum is σ = 225333576. Its totient is φ = 23111088.

The previous prime is 86666641. The next prime is 86666677. The reversal of 86666670 is 7666668.

It is a happy number.

It is a super-2 number, since 2×86666670² = 15022223377777800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86666677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 481392 + ... + 481571.

It is an arithmetic number, because the mean of its divisors is an integer number (9388899).

Almost surely, 2^86666670 is an apocalyptic number.

86666670 is an abundant number, since it is smaller than the sum of its proper divisors (138666906).

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

86666670 is a wasteful number, since it uses less digits than its factorization.

86666670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962976 (or 962973 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 86666670 is about 9309.4935415413. The cubic root of 86666670 is about 442.5381370942.

The spelling of 86666670 in words is "eighty-six million, six hundred sixty-six thousand, six hundred seventy".