68676493 has 2 divisors, whose sum is σ = 68676494. Its totient is φ = 68676492.

The previous prime is 68676479. The next prime is 68676497. The reversal of 68676493 is 39467686.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46416969 + 22259524 = 6813^2 + 4718^2 .

It is a cyclic number.

It is not a de Polignac number, because 68676493 - 2²¹ = 66579341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68676497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34338246 + 34338247.

It is an arithmetic number, because the mean of its divisors is an integer number (34338247).

Almost surely, 2^68676493 is an apocalyptic number.

It is an amenable number.

68676493 is a deficient number, since it is larger than the sum of its proper divisors (1).

68676493 is an equidigital number, since it uses as much as digits as its factorization.

68676493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 49.

The square root of 68676493 is about 8287.1281515372. The cubic root of 68676493 is about 409.5145811773.

It can be divided in two parts, 68676 and 493, that added together give a square (69169 = 263²).

The spelling of 68676493 in words is "sixty-eight million, six hundred seventy-six thousand, four hundred ninety-three".