136805146 has 4 divisors (see below), whose sum is σ = 205207722. Its totient is φ = 68402572.

The previous prime is 136805107. The next prime is 136805147. The reversal of 136805146 is 641508631.

It is a happy number.

136805146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 641508631 = 7001 ⋅91631.

It can be written as a sum of positive squares in only one way, i.e., 121242121 + 15563025 = 11011^2 + 3945^2 .

It is not an unprimeable number, because it can be changed into a prime (136805147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34201285 + ... + 34201288.

Almost surely, 2^136805146 is an apocalyptic number.

136805146 is a deficient number, since it is larger than the sum of its proper divisors (68402576).

136805146 is an equidigital number, since it uses as much as digits as its factorization.

136805146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68402575.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 136805146 is about 11696.3731985603. The cubic root of 136805146 is about 515.2691539319.

The spelling of 136805146 in words is "one hundred thirty-six million, eight hundred five thousand, one hundred forty-six".