115639166 has 4 divisors (see below), whose sum is σ = 173458752. Its totient is φ = 57819582.

The previous prime is 115639159. The next prime is 115639217. The reversal of 115639166 is 661936511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 661936511 = 12517 ⋅52883.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28909790 + ... + 28909793.

It is an arithmetic number, because the mean of its divisors is an integer number (43364688).

Almost surely, 2^115639166 is an apocalyptic number.

115639166 is a deficient number, since it is larger than the sum of its proper divisors (57819586).

115639166 is an equidigital number, since it uses as much as digits as its factorization.

115639166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57819585.

The product of its digits is 29160, while the sum is 38.

The square root of 115639166 is about 10753.5652692491. The cubic root of 115639166 is about 487.1936849321.

The spelling of 115639166 in words is "one hundred fifteen million, six hundred thirty-nine thousand, one hundred sixty-six".