111664475 has 12 divisors (see below), whose sum is σ = 149115456. Its totient is φ = 82459680.

The previous prime is 111664459. The next prime is 111664477. The reversal of 111664475 is 574466111.

It is not a de Polignac number, because 111664475 - 2⁴ = 111664459 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111664477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171467 + ... + 172116.

It is an arithmetic number, because the mean of its divisors is an integer number (12426288).

Almost surely, 2^111664475 is an apocalyptic number.

111664475 is a deficient number, since it is larger than the sum of its proper divisors (37450981).

111664475 is a wasteful number, since it uses less digits than its factorization.

111664475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343606 (or 343601 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 111664475 is about 10567.1412879738. The cubic root of 111664475 is about 481.5466243531.

The spelling of 111664475 in words is "one hundred eleven million, six hundred sixty-four thousand, four hundred seventy-five".