36440065 has 4 divisors (see below), whose sum is σ = 43728084. Its totient is φ = 29152048.

The previous prime is 36440059. The next prime is 36440069. The reversal of 36440065 is 56004463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56004463 = 1609 ⋅34807.

It can be written as a sum of positive squares in 2 ways, for example, as 21455424 + 14984641 = 4632^2 + 3871^2 .

It is a cyclic number.

It is not a de Polignac number, because 36440065 - 2¹⁹ = 35915777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36440069) 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, 3644002 + ... + 3644011.

It is an arithmetic number, because the mean of its divisors is an integer number (10932021).

Almost surely, 2^36440065 is an apocalyptic number.

It is an amenable number.

36440065 is a deficient number, since it is larger than the sum of its proper divisors (7288019).

36440065 is an equidigital number, since it uses as much as digits as its factorization.

36440065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7288018.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 36440065 is about 6036.5606929774. The cubic root of 36440065 is about 331.5327079815.

The spelling of 36440065 in words is "thirty-six million, four hundred forty thousand, sixty-five".