136699 has 4 divisors (see below), whose sum is σ = 137536. Its totient is φ = 135864.

The previous prime is 136693. The next prime is 136709. The reversal of 136699 is 996631.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 136699 - 2³ = 136691 is a prime.

It is a Duffinian number.

136699 is a lucky number.

It is a plaindrome in base 10.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 136699.

It is not an unprimeable number, because it can be changed into a prime (136691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84 + ... + 529.

It is an arithmetic number, because the mean of its divisors is an integer number (34384).

2¹³⁶⁶⁹⁹ is an apocalyptic number.

136699 is a deficient number, since it is larger than the sum of its proper divisors (837).

136699 is an equidigital number, since it uses as much as digits as its factorization.

136699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836.

The product of its digits is 8748, while the sum is 34.

The square root of 136699 is about 369.7282786047. The cubic root of 136699 is about 51.5135855069.

The spelling of 136699 in words is "one hundred thirty-six thousand, six hundred ninety-nine".