111690538 has 8 divisors (see below), whose sum is σ = 167946660. Its totient is φ = 55708320.

The previous prime is 111690533. The next prime is 111690539. The reversal of 111690538 is 835096111.

It can be written as a sum of positive squares in 2 ways, for example, as 111576969 + 113569 = 10563^2 + 337^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (111690533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67453 + ... + 69088.

Almost surely, 2^111690538 is an apocalyptic number.

111690538 is a deficient number, since it is larger than the sum of its proper divisors (56256122).

111690538 is a wasteful number, since it uses less digits than its factorization.

111690538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136952.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 111690538 is about 10568.3744256153. The cubic root of 111690538 is about 481.5840865014.

The spelling of 111690538 in words is "one hundred eleven million, six hundred ninety thousand, five hundred thirty-eight".