68076457 has 2 divisors, whose sum is σ = 68076458. Its totient is φ = 68076456.

The previous prime is 68076451. The next prime is 68076467. The reversal of 68076457 is 75467086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39175081 + 28901376 = 6259^2 + 5376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68076457 is a prime.

It is not a weakly prime, because it can be changed into another prime (68076451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34038228 + 34038229.

It is an arithmetic number, because the mean of its divisors is an integer number (34038229).

Almost surely, 2^68076457 is an apocalyptic number.

It is an amenable number.

68076457 is a deficient number, since it is larger than the sum of its proper divisors (1).

68076457 is an equidigital number, since it uses as much as digits as its factorization.

68076457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 68076457 is about 8250.8458354280. The cubic root of 68076457 is about 408.3184289252.

The spelling of 68076457 in words is "sixty-eight million, seventy-six thousand, four hundred fifty-seven".