115405623 has 6 divisors (see below), whose sum is σ = 166697024. Its totient is φ = 76937076.

The previous prime is 115405613. The next prime is 115405643. The reversal of 115405623 is 326504511.

It is not a de Polignac number, because 115405623 - 2²¹ = 113308471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115405613) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6411415 + ... + 6411432.

Almost surely, 2^115405623 is an apocalyptic number.

115405623 is a deficient number, since it is larger than the sum of its proper divisors (51291401).

115405623 is a wasteful number, since it uses less digits than its factorization.

115405623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12822853 (or 12822850 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 115405623 is about 10742.7009173671. The cubic root of 115405623 is about 486.8654877152.

The spelling of 115405623 in words is "one hundred fifteen million, four hundred five thousand, six hundred twenty-three".