111798666 has 24 divisors (see below), whose sum is σ = 276835104. Its totient is φ = 31942440.

The previous prime is 111798649. The next prime is 111798671. The reversal of 111798666 is 666897111.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 443520 + ... + 443771.

It is an arithmetic number, because the mean of its divisors is an integer number (11534796).

Almost surely, 2^111798666 is an apocalyptic number.

111798666 is an abundant number, since it is smaller than the sum of its proper divisors (165036438).

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

111798666 is a wasteful number, since it uses less digits than its factorization.

111798666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887306 (or 887303 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 111798666 is about 10573.4888281967. The cubic root of 111798666 is about 481.7394441235.

The spelling of 111798666 in words is "one hundred eleven million, seven hundred ninety-eight thousand, six hundred sixty-six".