136704487 has 4 divisors (see below), whose sum is σ = 143899480. Its totient is φ = 129509496.

The previous prime is 136704473. The next prime is 136704511. The reversal of 136704487 is 784407631.

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

It is a cyclic number.

It is not a de Polignac number, because 136704487 - 2¹¹ = 136702439 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 (136704457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3597468 + ... + 3597505.

It is an arithmetic number, because the mean of its divisors is an integer number (35974870).

Almost surely, 2^136704487 is an apocalyptic number.

136704487 is a deficient number, since it is larger than the sum of its proper divisors (7194993).

136704487 is an equidigital number, since it uses as much as digits as its factorization.

136704487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7194992.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 136704487 is about 11692.0694062257. The cubic root of 136704487 is about 515.1427473716.

The spelling of 136704487 in words is "one hundred thirty-six million, seven hundred four thousand, four hundred eighty-seven".