111666664 has 8 divisors (see below), whose sum is σ = 209375010. Its totient is φ = 55833328.

The previous prime is 111666649. The next prime is 111666677. The reversal of 111666664 is 466666111.

It can be written as a sum of positive squares in only one way, i.e., 111133764 + 532900 = 10542^2 + 730^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6979159 + ... + 6979174.

Almost surely, 2^111666664 is an apocalyptic number.

It is an amenable number.

111666664 is a deficient number, since it is larger than the sum of its proper divisors (97708346).

111666664 is a wasteful number, since it uses less digits than its factorization.

111666664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13958339 (or 13958335 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 111666664 is about 10567.2448632555. The cubic root of 111666664 is about 481.5497709781.

The spelling of 111666664 in words is "one hundred eleven million, six hundred sixty-six thousand, six hundred sixty-four".