136685594 has 4 divisors (see below), whose sum is σ = 205028394. Its totient is φ = 68342796.

The previous prime is 136685587. The next prime is 136685599. The reversal of 136685594 is 495586631.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 130804969 + 5880625 = 11437^2 + 2425^2 .

It is not an unprimeable number, because it can be changed into a prime (136685599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34171397 + ... + 34171400.

Almost surely, 2^136685594 is an apocalyptic number.

136685594 is a deficient number, since it is larger than the sum of its proper divisors (68342800).

136685594 is an equidigital number, since it uses as much as digits as its factorization.

136685594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68342799.

The product of its digits is 777600, while the sum is 47.

The square root of 136685594 is about 11691.2614375011. The cubic root of 136685594 is about 515.1190148165.

The spelling of 136685594 in words is "one hundred thirty-six million, six hundred eighty-five thousand, five hundred ninety-four".