68848513 has 2 divisors, whose sum is σ = 68848514. Its totient is φ = 68848512.

The previous prime is 68848447. The next prime is 68848519. The reversal of 68848513 is 31584886.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61968384 + 6880129 = 7872^2 + 2623^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68848513 is a prime.

It is a super-2 number, since 2×68848513² = 9480235484622338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68848513.

It is not a weakly prime, because it can be changed into another prime (68848519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34424256 + 34424257.

It is an arithmetic number, because the mean of its divisors is an integer number (34424257).

Almost surely, 2^68848513 is an apocalyptic number.

It is an amenable number.

68848513 is a deficient number, since it is larger than the sum of its proper divisors (1).

68848513 is an equidigital number, since it uses as much as digits as its factorization.

68848513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 184320, while the sum is 43.

The square root of 68848513 is about 8297.5004067490. The cubic root of 68848513 is about 409.8562117244.

The spelling of 68848513 in words is "sixty-eight million, eight hundred forty-eight thousand, five hundred thirteen".