91668012 has 24 divisors (see below), whose sum is σ = 226474416. Its totient is φ = 28758528.

The previous prime is 91668011. The next prime is 91668037. The reversal of 91668012 is 21086619.

It is not an unprimeable number, because it can be changed into a prime (91668011) 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, 224473 + ... + 224880.

It is an arithmetic number, because the mean of its divisors is an integer number (9436434).

Almost surely, 2^91668012 is an apocalyptic number.

It is an amenable number.

91668012 is an abundant number, since it is smaller than the sum of its proper divisors (134806404).

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

91668012 is a wasteful number, since it uses less digits than its factorization.

91668012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449377 (or 449375 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 91668012 is about 9574.3413350475. The cubic root of 91668012 is about 450.8920772963.

The spelling of 91668012 in words is "ninety-one million, six hundred sixty-eight thousand, twelve".