115776861 has 16 divisors (see below), whose sum is σ = 162724800. Its totient is φ = 73018368.

The previous prime is 115776827. The next prime is 115776877. The reversal of 115776861 is 168677511.

It is a happy number.

It is not a de Polignac number, because 115776861 - 2⁶ = 115776797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115776061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68535 + ... + 70203.

It is an arithmetic number, because the mean of its divisors is an integer number (10170300).

Almost surely, 2^115776861 is an apocalyptic number.

It is an amenable number.

115776861 is a deficient number, since it is larger than the sum of its proper divisors (46947939).

115776861 is a wasteful number, since it uses less digits than its factorization.

115776861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2908.

The product of its digits is 70560, while the sum is 42.

The square root of 115776861 is about 10759.9656597965. The cubic root of 115776861 is about 487.3869802432.

The spelling of 115776861 in words is "one hundred fifteen million, seven hundred seventy-six thousand, eight hundred sixty-one".