86664012 has 12 divisors (see below), whose sum is σ = 202216056. Its totient is φ = 28888000.

The previous prime is 86664007. The next prime is 86664013. The reversal of 86664012 is 21046668.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×86664012² = 15021301951872288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86664013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3610989 + ... + 3611012.

It is an arithmetic number, because the mean of its divisors is an integer number (16851338).

Almost surely, 2^86664012 is an apocalyptic number.

It is an amenable number.

86664012 is an abundant number, since it is smaller than the sum of its proper divisors (115552044).

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

86664012 is a wasteful number, since it uses less digits than its factorization.

86664012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7222008 (or 7222006 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 86664012 is about 9309.3507829494. The cubic root of 86664012 is about 442.5336129467.

The spelling of 86664012 in words is "eighty-six million, six hundred sixty-four thousand, twelve".