136647065 has 4 divisors (see below), whose sum is σ = 163976484. Its totient is φ = 109317648.

The previous prime is 136647059. The next prime is 136647067. The reversal of 136647065 is 560746631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560746631 = 31 ⋅18088601.

It can be written as a sum of positive squares in 2 ways, for example, as 87254281 + 49392784 = 9341^2 + 7028^2 .

It is a cyclic number.

It is not a de Polignac number, because 136647065 - 2¹⁸ = 136384921 is a prime.

It is a super-2 number, since 2×136647065² = 37344840746228450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136647067) 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, 13664702 + ... + 13664711.

It is an arithmetic number, because the mean of its divisors is an integer number (40994121).

Almost surely, 2^136647065 is an apocalyptic number.

It is an amenable number.

136647065 is a deficient number, since it is larger than the sum of its proper divisors (27329419).

136647065 is an equidigital number, since it uses as much as digits as its factorization.

136647065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27329418.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 136647065 is about 11689.6135522095. The cubic root of 136647065 is about 515.0706096041.

The spelling of 136647065 in words is "one hundred thirty-six million, six hundred forty-seven thousand, sixty-five".