111661963 has 8 divisors (see below), whose sum is σ = 127733760. Its totient is φ = 95620200.

The previous prime is 111661961. The next prime is 111662017. The reversal of 111661963 is 369166111.

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

It is a cyclic number.

It is not a de Polignac number, because 111661963 - 2¹ = 111661961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111661961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1128 + ... + 14986.

It is an arithmetic number, because the mean of its divisors is an integer number (15966720).

Almost surely, 2^111661963 is an apocalyptic number.

111661963 is a deficient number, since it is larger than the sum of its proper divisors (16071797).

111661963 is a wasteful number, since it uses less digits than its factorization.

111661963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15017.

The product of its digits is 5832, while the sum is 34.

The square root of 111661963 is about 10567.0224282908. The cubic root of 111661963 is about 481.5430133742.

The spelling of 111661963 in words is "one hundred eleven million, six hundred sixty-one thousand, nine hundred sixty-three".