111604663 has 4 divisors (see below), whose sum is σ = 113133568. Its totient is φ = 110075760.

The previous prime is 111604621. The next prime is 111604667. The reversal of 111604663 is 366406111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366406111 = 3259 ⋅112429.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111604663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111604667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 764343 + ... + 764488.

It is an arithmetic number, because the mean of its divisors is an integer number (28283392).

Almost surely, 2^111604663 is an apocalyptic number.

111604663 is a deficient number, since it is larger than the sum of its proper divisors (1528905).

111604663 is an equidigital number, since it uses as much as digits as its factorization.

111604663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528904.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 111604663 is about 10564.3108151928. The cubic root of 111604663 is about 481.4606303944.

The spelling of 111604663 in words is "one hundred eleven million, six hundred four thousand, six hundred sixty-three".