116564681 has 8 divisors (see below), whose sum is σ = 123260928. Its totient is φ = 110052000.

The previous prime is 116564633. The next prime is 116564683. The reversal of 116564681 is 186465611.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116564681 is a prime.

It is a super-2 number, since 2×116564681² = 27174649713263522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (116564683) 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, 44585 + ... + 47126.

It is an arithmetic number, because the mean of its divisors is an integer number (15407616).

Almost surely, 2^116564681 is an apocalyptic number.

It is an amenable number.

116564681 is a deficient number, since it is larger than the sum of its proper divisors (6696247).

116564681 is an equidigital number, since it uses as much as digits as its factorization.

116564681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91783.

The product of its digits is 34560, while the sum is 38.

The square root of 116564681 is about 10796.5124461559. The cubic root of 116564681 is about 488.4899800186.

The spelling of 116564681 in words is "one hundred sixteen million, five hundred sixty-four thousand, six hundred eighty-one".