115720681 has 8 divisors (see below), whose sum is σ = 116512704. Its totient is φ = 114931920.

The previous prime is 115720679. The next prime is 115720711. The reversal of 115720681 is 186027511.

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 115720681 - 2¹ = 115720679 is a prime.

It is a super-2 number, since 2×115720681² = 26782552022207522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115720601) 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, 130020 + ... + 130906.

It is an arithmetic number, because the mean of its divisors is an integer number (14564088).

Almost surely, 2^115720681 is an apocalyptic number.

It is an amenable number.

115720681 is a deficient number, since it is larger than the sum of its proper divisors (792023).

115720681 is an equidigital number, since it uses as much as digits as its factorization.

115720681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631.

The product of its (nonzero) digits is 3360, while the sum is 31.

The square root of 115720681 is about 10757.3547398977. The cubic root of 115720681 is about 487.3081336573.

The spelling of 115720681 in words is "one hundred fifteen million, seven hundred twenty thousand, six hundred eighty-one".