136353857 has 4 divisors (see below), whose sum is σ = 137334960. Its totient is φ = 135372756.

The previous prime is 136353851. The next prime is 136353859. The reversal of 136353857 is 758353631.

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 136353857 - 2⁶ = 136353793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136353851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490343 + ... + 490620.

It is an arithmetic number, because the mean of its divisors is an integer number (34333740).

Almost surely, 2^136353857 is an apocalyptic number.

It is an amenable number.

136353857 is a deficient number, since it is larger than the sum of its proper divisors (981103).

136353857 is an equidigital number, since it uses as much as digits as its factorization.

136353857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981102.

The product of its digits is 226800, while the sum is 41.

The square root of 136353857 is about 11677.0654275807. The cubic root of 136353857 is about 514.7019446046.

The spelling of 136353857 in words is "one hundred thirty-six million, three hundred fifty-three thousand, eight hundred fifty-seven".