68247451 has 2 divisors, whose sum is σ = 68247452. Its totient is φ = 68247450.

The previous prime is 68247433. The next prime is 68247467. The reversal of 68247451 is 15474286.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68247451 - 2¹¹ = 68245403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68247451.

It is not a weakly prime, because it can be changed into another prime (68245451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34123725 + 34123726.

It is an arithmetic number, because the mean of its divisors is an integer number (34123726).

Almost surely, 2^68247451 is an apocalyptic number.

68247451 is a deficient number, since it is larger than the sum of its proper divisors (1).

68247451 is an equidigital number, since it uses as much as digits as its factorization.

68247451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 37.

The square root of 68247451 is about 8261.2015469906. The cubic root of 68247451 is about 408.6600136087.

The spelling of 68247451 in words is "sixty-eight million, two hundred forty-seven thousand, four hundred fifty-one".