136545065 has 4 divisors (see below), whose sum is σ = 163854084. Its totient is φ = 109236048.

The previous prime is 136545061. The next prime is 136545083. The reversal of 136545065 is 560545631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560545631 = 757 ⋅740483.

It can be written as a sum of positive squares in 2 ways, for example, as 65108761 + 71436304 = 8069^2 + 8452^2 .

It is a cyclic number.

It is not a de Polignac number, because 136545065 - 2² = 136545061 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136545061) 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, 13654502 + ... + 13654511.

It is an arithmetic number, because the mean of its divisors is an integer number (40963521).

Almost surely, 2^136545065 is an apocalyptic number.

It is an amenable number.

136545065 is a deficient number, since it is larger than the sum of its proper divisors (27309019).

136545065 is an equidigital number, since it uses as much as digits as its factorization.

136545065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27309018.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 136545065 is about 11685.2498903532. The cubic root of 136545065 is about 514.9424198043.

The spelling of 136545065 in words is "one hundred thirty-six million, five hundred forty-five thousand, sixty-five".