662318057 has 2 divisors, whose sum is σ = 662318058. Its totient is φ = 662318056.

The previous prime is 662318047. The next prime is 662318087. The reversal of 662318057 is 750813266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 602162521 + 60155536 = 24539^2 + 7756^2 .

It is a cyclic number.

It is not a de Polignac number, because 662318057 - 2⁸ = 662317801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 662318057.

It is not a weakly prime, because it can be changed into another prime (662318047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331159028 + 331159029.

It is an arithmetic number, because the mean of its divisors is an integer number (331159029).

Almost surely, 2^662318057 is an apocalyptic number.

It is an amenable number.

662318057 is a deficient number, since it is larger than the sum of its proper divisors (1).

662318057 is an equidigital number, since it uses as much as digits as its factorization.

662318057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 662318057 is about 25735.5407364990. The cubic root of 662318057 is about 871.6768895376.

The spelling of 662318057 in words is "six hundred sixty-two million, three hundred eighteen thousand, fifty-seven".