113666445 has 48 divisors (see below), whose sum is σ = 202954752. Its totient is φ = 58821120.

The previous prime is 113666419. The next prime is 113666453. The reversal of 113666445 is 544666311.

It is a happy number.

It is not a de Polignac number, because 113666445 - 2¹⁰ = 113665421 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 471525 + ... + 471765.

It is an arithmetic number, because the mean of its divisors is an integer number (4228224).

Almost surely, 2^113666445 is an apocalyptic number.

113666445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

113666445 is a deficient number, since it is larger than the sum of its proper divisors (89288307).

113666445 is a wasteful number, since it uses less digits than its factorization.

113666445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522 (or 519 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 113666445 is about 10661.4466654390. The cubic root of 113666445 is about 484.4073889962.

The spelling of 113666445 in words is "one hundred thirteen million, six hundred sixty-six thousand, four hundred forty-five".