1356500065 has 4 divisors (see below), whose sum is σ = 1627800084. Its totient is φ = 1085200048.

The previous prime is 1356500053. The next prime is 1356500177. The reversal of 1356500065 is 5600056531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5600056531 = 13627 ⋅410953.

It can be written as a sum of positive squares in 2 ways, for example, as 248409121 + 1108090944 = 15761^2 + 33288^2 .

It is a cyclic number.

It is not a de Polignac number, because 1356500065 - 2²¹ = 1354402913 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135650002 + ... + 135650011.

It is an arithmetic number, because the mean of its divisors is an integer number (406950021).

Almost surely, 2^1356500065 is an apocalyptic number.

It is an amenable number.

1356500065 is a deficient number, since it is larger than the sum of its proper divisors (271300019).

1356500065 is an equidigital number, since it uses as much as digits as its factorization.

1356500065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271300018.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 1356500065 is about 36830.6946038220. The cubic root of 1356500065 is about 1106.9804209796.

Adding to 1356500065 its reverse (5600056531), we get a palindrome (6956556596).

The spelling of 1356500065 in words is "one billion, three hundred fifty-six million, five hundred thousand, sixty-five".