36981265 has 4 divisors (see below), whose sum is σ = 44377524. Its totient is φ = 29585008.

The previous prime is 36981179. The next prime is 36981271. The reversal of 36981265 is 56218963.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13010449 + 23970816 = 3607^2 + 4896^2 .

It is a cyclic number.

It is not a de Polignac number, because 36981265 - 2⁹ = 36980753 is a prime.

It is a super-2 number, since 2×36981265² = 2735227922000450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3698122 + ... + 3698131.

It is an arithmetic number, because the mean of its divisors is an integer number (11094381).

Almost surely, 2^36981265 is an apocalyptic number.

It is an amenable number.

36981265 is a deficient number, since it is larger than the sum of its proper divisors (7396259).

36981265 is an equidigital number, since it uses as much as digits as its factorization.

36981265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7396258.

The product of its digits is 77760, while the sum is 40.

The square root of 36981265 is about 6081.2223277890. Note that the first 3 decimals coincide. The cubic root of 36981265 is about 333.1659331678.

The spelling of 36981265 in words is "thirty-six million, nine hundred eighty-one thousand, two hundred sixty-five".