116236561 has 16 divisors (see below), whose sum is σ = 134784000. Its totient is φ = 98185680.

The previous prime is 116236529. The next prime is 116236567. The reversal of 116236561 is 165632611.

It is a cyclic number.

It is not a de Polignac number, because 116236561 - 2⁵ = 116236529 is a prime.

It is a super-2 number, since 2×116236561² = 27021876226213442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116236567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232690 + ... + 233188.

It is an arithmetic number, because the mean of its divisors is an integer number (8424000).

Almost surely, 2^116236561 is an apocalyptic number.

It is an amenable number.

116236561 is a deficient number, since it is larger than the sum of its proper divisors (18547439).

116236561 is a wasteful number, since it uses less digits than its factorization.

116236561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924.

The product of its digits is 6480, while the sum is 31.

The square root of 116236561 is about 10781.3060897092. The cubic root of 116236561 is about 488.0311962163.

The spelling of 116236561 in words is "one hundred sixteen million, two hundred thirty-six thousand, five hundred sixty-one".