662405057 has 2 divisors, whose sum is σ = 662405058. Its totient is φ = 662405056.

The previous prime is 662405047. The next prime is 662405059. The reversal of 662405057 is 750504266.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 656948161 + 5456896 = 25631^2 + 2336^2 .

It is a cyclic number.

It is not a de Polignac number, because 662405057 - 2⁴ = 662405041 is a prime.

Together with 662405059, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (662405059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331202528 + 331202529.

It is an arithmetic number, because the mean of its divisors is an integer number (331202529).

Almost surely, 2^662405057 is an apocalyptic number.

It is an amenable number.

662405057 is a deficient number, since it is larger than the sum of its proper divisors (1).

662405057 is an equidigital number, since it uses as much as digits as its factorization.

662405057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 662405057 is about 25737.2309505121. The cubic root of 662405057 is about 871.7150547707.

The spelling of 662405057 in words is "six hundred sixty-two million, four hundred five thousand, fifty-seven".