111666072 has 32 divisors (see below), whose sum is σ = 319046400. Its totient is φ = 31904544.

The previous prime is 111666043. The next prime is 111666073. The reversal of 111666072 is 270666111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111666073) 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, 332172 + ... + 332507.

It is an arithmetic number, because the mean of its divisors is an integer number (9970200).

Almost surely, 2^111666072 is an apocalyptic number.

111666072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111666072 is an abundant number, since it is smaller than the sum of its proper divisors (207380328).

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

111666072 is a wasteful number, since it uses less digits than its factorization.

111666072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664695 (or 664691 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 111666072 is about 10567.2168521328. The cubic root of 111666072 is about 481.5489199991.

The spelling of 111666072 in words is "one hundred eleven million, six hundred sixty-six thousand, seventy-two".