68080457 has 4 divisors (see below), whose sum is σ = 69013140. Its totient is φ = 67147776.

The previous prime is 68080451. The next prime is 68080471. The reversal of 68080457 is 75408086.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32844361 + 35236096 = 5731^2 + 5936^2 .

It is a cyclic number.

It is not a de Polignac number, because 68080457 - 2¹² = 68076361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68080457.

It is not an unprimeable number, because it can be changed into a prime (68080451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466232 + ... + 466377.

It is an arithmetic number, because the mean of its divisors is an integer number (17253285).

Almost surely, 2^68080457 is an apocalyptic number.

It is an amenable number.

68080457 is a deficient number, since it is larger than the sum of its proper divisors (932683).

68080457 is an equidigital number, since it uses as much as digits as its factorization.

68080457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932682.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 68080457 is about 8251.0882312577. The cubic root of 68080457 is about 408.3264260204.

The spelling of 68080457 in words is "sixty-eight million, eighty thousand, four hundred fifty-seven".