65072613 has 8 divisors (see below), whose sum is σ = 86802976. Its totient is φ = 43362000.

The previous prime is 65072599. The next prime is 65072633. The reversal of 65072613 is 31627056.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65072613 - 2⁹ = 65072101 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 (65072633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6618 + ... + 13188.

It is an arithmetic number, because the mean of its divisors is an integer number (10850372).

Almost surely, 2^65072613 is an apocalyptic number.

It is an amenable number.

65072613 is a deficient number, since it is larger than the sum of its proper divisors (21730363).

65072613 is a wasteful number, since it uses less digits than its factorization.

65072613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9875.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 65072613 is about 8066.7597584160. The cubic root of 65072613 is about 402.2222416587. Note that the first 4 decimals are identical.

Adding to 65072613 its reverse (31627056), we get a palindrome (96699669).

The spelling of 65072613 in words is "sixty-five million, seventy-two thousand, six hundred thirteen".