135668359 has 4 divisors (see below), whose sum is σ = 137385760. Its totient is φ = 133950960.

The previous prime is 135668333. The next prime is 135668363. The reversal of 135668359 is 953866531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 953866531 = 157 ⋅6075583.

It is a cyclic number.

It is not a de Polignac number, because 135668359 - 2⁵ = 135668327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135668389) 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, 858582 + ... + 858739.

It is an arithmetic number, because the mean of its divisors is an integer number (34346440).

Almost surely, 2^135668359 is an apocalyptic number.

135668359 is a deficient number, since it is larger than the sum of its proper divisors (1717401).

135668359 is an equidigital number, since it uses as much as digits as its factorization.

135668359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717400.

The product of its digits is 583200, while the sum is 46.

The square root of 135668359 is about 11647.6761201538. The cubic root of 135668359 is about 513.8379669128.

The spelling of 135668359 in words is "one hundred thirty-five million, six hundred sixty-eight thousand, three hundred fifty-nine".