68293457 has 2 divisors, whose sum is σ = 68293458. Its totient is φ = 68293456.

The previous prime is 68293447. The next prime is 68293469. The reversal of 68293457 is 75439286.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56190016 + 12103441 = 7496^2 + 3479^2 .

It is a cyclic number.

It is not a de Polignac number, because 68293457 - 2⁴ = 68293441 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68293447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34146728 + 34146729.

It is an arithmetic number, because the mean of its divisors is an integer number (34146729).

Almost surely, 2^68293457 is an apocalyptic number.

It is an amenable number.

68293457 is a deficient number, since it is larger than the sum of its proper divisors (1).

68293457 is an equidigital number, since it uses as much as digits as its factorization.

68293457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 44.

The square root of 68293457 is about 8263.9855396776. The cubic root of 68293457 is about 408.7518196729.

The spelling of 68293457 in words is "sixty-eight million, two hundred ninety-three thousand, four hundred fifty-seven".