65706013 has 2 divisors, whose sum is σ = 65706014. Its totient is φ = 65706012.

The previous prime is 65706007. The next prime is 65706023. The reversal of 65706013 is 31060756.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47361924 + 18344089 = 6882^2 + 4283^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65706013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65706023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32853006 + 32853007.

It is an arithmetic number, because the mean of its divisors is an integer number (32853007).

Almost surely, 2^65706013 is an apocalyptic number.

It is an amenable number.

65706013 is a deficient number, since it is larger than the sum of its proper divisors (1).

65706013 is an equidigital number, since it uses as much as digits as its factorization.

65706013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 65706013 is about 8105.9245617018. The cubic root of 65706013 is about 403.5230725485.

Adding to 65706013 its reverse (31060756), we get a palindrome (96766769).

The spelling of 65706013 in words is "sixty-five million, seven hundred six thousand, thirteen".