116661887 has 4 divisors (see below), whose sum is σ = 116905920. Its totient is φ = 116417856.

The previous prime is 116661859. The next prime is 116661889. The reversal of 116661887 is 788166611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 116661887 - 2⁸ = 116661631 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 (116661889) 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, 121298 + ... + 122255.

It is an arithmetic number, because the mean of its divisors is an integer number (29226480).

Almost surely, 2^116661887 is an apocalyptic number.

116661887 is a deficient number, since it is larger than the sum of its proper divisors (244033).

116661887 is an equidigital number, since it uses as much as digits as its factorization.

116661887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244032.

The product of its digits is 96768, while the sum is 44.

The square root of 116661887 is about 10801.0132395067. The cubic root of 116661887 is about 488.6257300111.

The spelling of 116661887 in words is "one hundred sixteen million, six hundred sixty-one thousand, eight hundred eighty-seven".