115665061 has 8 divisors (see below), whose sum is σ = 119522304. Its totient is φ = 111815760.

The previous prime is 115665049. The next prime is 115665083. The reversal of 115665061 is 160566511.

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

It is not a de Polignac number, because 115665061 - 2⁵ = 115665029 is a prime.

It is a super-2 number, since 2×115665061² = 26756812672267442, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115665001) 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, 47895 + ... + 50251.

It is an arithmetic number, because the mean of its divisors is an integer number (14940288).

Almost surely, 2^115665061 is an apocalyptic number.

It is an amenable number.

115665061 is a deficient number, since it is larger than the sum of its proper divisors (3857243).

115665061 is a wasteful number, since it uses less digits than its factorization.

115665061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3971.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 115665061 is about 10754.7692211409. The cubic root of 115665061 is about 487.2300478685.

The spelling of 115665061 in words is "one hundred fifteen million, six hundred sixty-five thousand, sixty-one".