111602961 has 32 divisors (see below), whose sum is σ = 168537600. Its totient is φ = 72979920.

The previous prime is 111602899. The next prime is 111602963. The reversal of 111602961 is 169206111.

It is not a de Polignac number, because 111602961 - 2⁷ = 111602833 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (111602963) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 491530 + ... + 491756.

It is an arithmetic number, because the mean of its divisors is an integer number (5266800).

Almost surely, 2^111602961 is an apocalyptic number.

It is an amenable number.

111602961 is a deficient number, since it is larger than the sum of its proper divisors (56934639).

111602961 is a wasteful number, since it uses less digits than its factorization.

111602961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506 (or 500 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 111602961 is about 10564.2302606484. The cubic root of 111602961 is about 481.4581829155.

The spelling of 111602961 in words is "one hundred eleven million, six hundred two thousand, nine hundred sixty-one".