115615691 has 8 divisors (see below), whose sum is σ = 125264304. Its totient is φ = 106283520.

The previous prime is 115615681. The next prime is 115615693. The reversal of 115615691 is 196516511.

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 115615691 - 2²⁶ = 48506827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115615693) 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, 78350 + ... + 79811.

It is an arithmetic number, because the mean of its divisors is an integer number (15658038).

Almost surely, 2^115615691 is an apocalyptic number.

115615691 is a deficient number, since it is larger than the sum of its proper divisors (9648613).

115615691 is a wasteful number, since it uses less digits than its factorization.

115615691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158221.

The product of its digits is 8100, while the sum is 35.

The square root of 115615691 is about 10752.4737153829. The cubic root of 115615691 is about 487.1607155783.

The spelling of 115615691 in words is "one hundred fifteen million, six hundred fifteen thousand, six hundred ninety-one".