104178609 has 16 divisors (see below), whose sum is σ = 154818240. Its totient is φ = 69236640.

The previous prime is 104178593. The next prime is 104178611. The reversal of 104178609 is 906871401.

104178609 is a `hidden beast` number, since 1 + 0 + 41 + 7 + 8 + 609 = 666.

It is not a de Polignac number, because 104178609 - 2⁴ = 104178593 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 not an unprimeable number, because it can be changed into a prime (104178209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3109 + ... + 14765.

It is an arithmetic number, because the mean of its divisors is an integer number (9676140).

Almost surely, 2^104178609 is an apocalyptic number.

It is an amenable number.

104178609 is a deficient number, since it is larger than the sum of its proper divisors (50639631).

104178609 is a wasteful number, since it uses less digits than its factorization.

104178609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11997 (or 11991 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 104178609 is about 10206.7922972891. The cubic root of 104178609 is about 470.5359948189.

The spelling of 104178609 in words is "one hundred four million, one hundred seventy-eight thousand, six hundred nine".