68519329 has 2 divisors, whose sum is σ = 68519330. Its totient is φ = 68519328.

The previous prime is 68519303. The next prime is 68519357. The reversal of 68519329 is 92391586.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55845729 + 12673600 = 7473^2 + 3560^2 .

It is a cyclic number.

It is not a de Polignac number, because 68519329 - 2⁷ = 68519201 is a prime.

It is a super-2 number, since 2×68519329² = 9389796893220482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68549329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34259664 + 34259665.

It is an arithmetic number, because the mean of its divisors is an integer number (34259665).

Almost surely, 2^68519329 is an apocalyptic number.

It is an amenable number.

68519329 is a deficient number, since it is larger than the sum of its proper divisors (1).

68519329 is an equidigital number, since it uses as much as digits as its factorization.

68519329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 43.

The square root of 68519329 is about 8277.6403038547. The cubic root of 68519329 is about 409.2019554867.

The spelling of 68519329 in words is "sixty-eight million, five hundred nineteen thousand, three hundred twenty-nine".