136704406 has 4 divisors (see below), whose sum is σ = 205056612. Its totient is φ = 68352202.

The previous prime is 136704401. The next prime is 136704431. The reversal of 136704406 is 604407631.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136704401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34176100 + ... + 34176103.

It is an arithmetic number, because the mean of its divisors is an integer number (51264153).

Almost surely, 2^136704406 is an apocalyptic number.

136704406 is a deficient number, since it is larger than the sum of its proper divisors (68352206).

136704406 is an equidigital number, since it uses as much as digits as its factorization.

136704406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68352205.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 136704406 is about 11692.0659423388. The cubic root of 136704406 is about 515.1426456277.

The spelling of 136704406 in words is "one hundred thirty-six million, seven hundred four thousand, four hundred six".