65074813 has 4 divisors (see below), whose sum is σ = 65405340. Its totient is φ = 64744288.

The previous prime is 65074799. The next prime is 65074819. The reversal of 65074813 is 31847056.

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 35676729 + 29398084 = 5973^2 + 5422^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65074813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65074819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164968 + ... + 165361.

It is an arithmetic number, because the mean of its divisors is an integer number (16351335).

Almost surely, 2^65074813 is an apocalyptic number.

It is an amenable number.

65074813 is a deficient number, since it is larger than the sum of its proper divisors (330527).

65074813 is a wasteful number, since it uses less digits than its factorization.

65074813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330526.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 65074813 is about 8066.8961193262. The cubic root of 65074813 is about 402.2267744359.

The spelling of 65074813 in words is "sixty-five million, seventy-four thousand, eight hundred thirteen".