65472013 has 4 divisors (see below), whose sum is σ = 66707388. Its totient is φ = 64236640.

The previous prime is 65471963. The next prime is 65472019. The reversal of 65472013 is 31027456.

65472013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 17280649 + 48191364 = 4157^2 + 6942^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65472013 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 (65472019) by changing a digit.

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, 617608 + ... + 617713.

It is an arithmetic number, because the mean of its divisors is an integer number (16676847).

Almost surely, 2^65472013 is an apocalyptic number.

It is an amenable number.

65472013 is a deficient number, since it is larger than the sum of its proper divisors (1235375).

65472013 is a wasteful number, since it uses less digits than its factorization.

65472013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235374.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 65472013 is about 8091.4778007481. The cubic root of 65472013 is about 403.0434781211.

Adding to 65472013 its reverse (31027456), we get a palindrome (96499469).

The spelling of 65472013 in words is "sixty-five million, four hundred seventy-two thousand, thirteen".