136352069 has 4 divisors (see below), whose sum is σ = 155830944. Its totient is φ = 116873196.

The previous prime is 136352063. The next prime is 136352077. The reversal of 136352069 is 960253631.

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 a de Polignac number, because none of the positive numbers 2^k-136352069 is a prime.

It is a super-2 number, since 2×136352069² = 37183773441161522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136352063) 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, 9739427 + ... + 9739440.

It is an arithmetic number, because the mean of its divisors is an integer number (38957736).

Almost surely, 2^136352069 is an apocalyptic number.

It is an amenable number.

136352069 is a deficient number, since it is larger than the sum of its proper divisors (19478875).

136352069 is an equidigital number, since it uses as much as digits as its factorization.

136352069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19478874.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 136352069 is about 11676.9888669982. The cubic root of 136352069 is about 514.6996948428.

The spelling of 136352069 in words is "one hundred thirty-six million, three hundred fifty-two thousand, sixty-nine".