115566657 has 8 divisors (see below), whose sum is σ = 154386720. Its totient is φ = 76895520.

The previous prime is 115566643. The next prime is 115566677. The reversal of 115566657 is 756665511.

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

It is not a de Polignac number, because 115566657 - 2¹⁰ = 115565633 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (115566677) 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, 35407 + ... + 38532.

It is an arithmetic number, because the mean of its divisors is an integer number (19298340).

Almost surely, 2^115566657 is an apocalyptic number.

It is an amenable number.

115566657 is a deficient number, since it is larger than the sum of its proper divisors (38820063).

115566657 is an equidigital number, since it uses as much as digits as its factorization.

115566657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74463.

The product of its digits is 189000, while the sum is 42.

The square root of 115566657 is about 10750.1933470985. The cubic root of 115566657 is about 487.0918356073.

The spelling of 115566657 in words is "one hundred fifteen million, five hundred sixty-six thousand, six hundred fifty-seven".