136706253 has 4 divisors (see below), whose sum is σ = 182275008. Its totient is φ = 91137500.

The previous prime is 136706237. The next prime is 136706287. The reversal of 136706253 is 352607631.

136706253 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 136706253 - 2⁴ = 136706237 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136706293) 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, 22784373 + ... + 22784378.

It is an arithmetic number, because the mean of its divisors is an integer number (45568752).

Almost surely, 2^136706253 is an apocalyptic number.

It is an amenable number.

136706253 is a deficient number, since it is larger than the sum of its proper divisors (45568755).

136706253 is an equidigital number, since it uses as much as digits as its factorization.

136706253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45568754.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 136706253 is about 11692.1449272578. The cubic root of 136706253 is about 515.1449656314.

The spelling of 136706253 in words is "one hundred thirty-six million, seven hundred six thousand, two hundred fifty-three".