111608397 has 12 divisors (see below), whose sum is σ = 168221664. Its totient is φ = 71170440.

The previous prime is 111608381. The next prime is 111608411. The reversal of 111608397 is 793806111.

111608397 is a `hidden beast` number, since 1 + 11 + 608 + 39 + 7 = 666.

It is not a de Polignac number, because 111608397 - 2⁴ = 111608381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111608377) 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, 269379 + ... + 269792.

It is an arithmetic number, because the mean of its divisors is an integer number (14018472).

Almost surely, 2^111608397 is an apocalyptic number.

It is an amenable number.

111608397 is a deficient number, since it is larger than the sum of its proper divisors (56613267).

111608397 is a wasteful number, since it uses less digits than its factorization.

111608397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539200 (or 539197 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 111608397 is about 10564.4875408133. The cubic root of 111608397 is about 481.4659998054.

The spelling of 111608397 in words is "one hundred eleven million, six hundred eight thousand, three hundred ninety-seven".