116666615 has 24 divisors (see below), whose sum is σ = 153210528. Its totient is φ = 85238400.

The previous prime is 116666581. The next prime is 116666617. The reversal of 116666615 is 516666611.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-116666615 is a prime.

It is a super-2 number, since 2×116666615² = 27222198111116450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116666617) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84662 + ... + 86028.

It is an arithmetic number, because the mean of its divisors is an integer number (6383772).

Almost surely, 2^116666615 is an apocalyptic number.

116666615 is a deficient number, since it is larger than the sum of its proper divisors (36543913).

116666615 is a wasteful number, since it uses less digits than its factorization.

116666615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499 (or 1486 counting only the distinct ones).

The product of its digits is 38880, while the sum is 38.

The square root of 116666615 is about 10801.2321056442. The cubic root of 116666615 is about 488.6323308280.

It can be divided in two parts, 11666 and 6615, that added together give a palindrome (18281).

The spelling of 116666615 in words is "one hundred sixteen million, six hundred sixty-six thousand, six hundred fifteen".