68468669 has 2 divisors, whose sum is σ = 68468670. Its totient is φ = 68468668.

The previous prime is 68468651. The next prime is 68468683. The reversal of 68468669 is 96686486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62884900 + 5583769 = 7930^2 + 2363^2 .

It is a cyclic number.

It is not a de Polignac number, because 68468669 - 2¹² = 68464573 is a prime.

It is a super-2 number, since 2×68468669² = 9375917269263122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68468669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68468269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34234334 + 34234335.

It is an arithmetic number, because the mean of its divisors is an integer number (34234335).

Almost surely, 2^68468669 is an apocalyptic number.

It is an amenable number.

68468669 is a deficient number, since it is larger than the sum of its proper divisors (1).

68468669 is an equidigital number, since it uses as much as digits as its factorization.

68468669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2985984, while the sum is 53.

The square root of 68468669 is about 8274.5796872107. The cubic root of 68468669 is about 409.1010823344.

The spelling of 68468669 in words is "sixty-eight million, four hundred sixty-eight thousand, six hundred sixty-nine".