493547657 has 2 divisors, whose sum is σ = 493547658. Its totient is φ = 493547656.

The previous prime is 493547651. The next prime is 493547753. The reversal of 493547657 is 756745394.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 460703296 + 32844361 = 21464^2 + 5731^2 .

It is a cyclic number.

It is not a de Polignac number, because 493547657 - 2¹⁰ = 493546633 is a prime.

It is not a weakly prime, because it can be changed into another prime (493547651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246773828 + 246773829.

It is an arithmetic number, because the mean of its divisors is an integer number (246773829).

Almost surely, 2^493547657 is an apocalyptic number.

It is an amenable number.

493547657 is a deficient number, since it is larger than the sum of its proper divisors (1).

493547657 is an equidigital number, since it uses as much as digits as its factorization.

493547657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3175200, while the sum is 50.

The square root of 493547657 is about 22215.9325034985. The cubic root of 493547657 is about 790.2715815718.

The spelling of 493547657 in words is "four hundred ninety-three million, five hundred forty-seven thousand, six hundred fifty-seven".