83664012 has 12 divisors (see below), whose sum is σ = 195216056. Its totient is φ = 27888000.

The previous prime is 83663981. The next prime is 83664013. The reversal of 83664012 is 21046638.

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

It is a super-2 number, since 2×83664012² = 13999333807872288, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (83664013) 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, 3485989 + ... + 3486012.

Almost surely, 2^83664012 is an apocalyptic number.

It is an amenable number.

83664012 is an abundant number, since it is smaller than the sum of its proper divisors (111552044).

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

83664012 is a wasteful number, since it uses less digits than its factorization.

83664012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6972008 (or 6972006 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 83664012 is about 9146.8033760435. The cubic root of 83664012 is about 437.3672186981.

The spelling of 83664012 in words is "eighty-three million, six hundred sixty-four thousand, twelve".