115709643 has 24 divisors (see below), whose sum is σ = 191830496. Its totient is φ = 65836800.

The previous prime is 115709611. The next prime is 115709647. The reversal of 115709643 is 346907511.

115709643 is a `hidden beast` number, since 1 + 1 + 5 + 7 + 0 + 9 + 643 = 666.

It is not a de Polignac number, because 115709643 - 2⁵ = 115709611 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115709598 and 115709607.

It is not an unprimeable number, because it can be changed into a prime (115709647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11373 + ... + 18993.

Almost surely, 2^115709643 is an apocalyptic number.

115709643 is a deficient number, since it is larger than the sum of its proper divisors (76120853).

115709643 is a wasteful number, since it uses less digits than its factorization.

115709643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7875 (or 7872 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 115709643 is about 10756.8416833195. The cubic root of 115709643 is about 487.2926392266.

The spelling of 115709643 in words is "one hundred fifteen million, seven hundred nine thousand, six hundred forty-three".