111720974 has 32 divisors (see below), whose sum is σ = 182808576. Its totient is φ = 51004800.

The previous prime is 111720971. The next prime is 111720977. The reversal of 111720974 is 479027111.

It is an interprime number because it is at equal distance from previous prime (111720971) and next prime (111720977).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 111720974.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111720971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241067 + ... + 241529.

It is an arithmetic number, because the mean of its divisors is an integer number (5712768).

Almost surely, 2^111720974 is an apocalyptic number.

111720974 is a deficient number, since it is larger than the sum of its proper divisors (71087602).

111720974 is a wasteful number, since it uses less digits than its factorization.

111720974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680.

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 111720974 is about 10569.8142840828. The cubic root of 111720974 is about 481.6278268883.

The spelling of 111720974 in words is "one hundred eleven million, seven hundred twenty thousand, nine hundred seventy-four".