6630257 has 2 divisors, whose sum is σ = 6630258. Its totient is φ = 6630256.

The previous prime is 6630229. The next prime is 6630269. The reversal of 6630257 is 7520366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5550736 + 1079521 = 2356^2 + 1039^2 .

It is a cyclic number.

It is not a de Polignac number, because 6630257 - 2¹² = 6626161 is a prime.

It is not a weakly prime, because it can be changed into another prime (6630227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3315128 + 3315129.

It is an arithmetic number, because the mean of its divisors is an integer number (3315129).

Almost surely, 2^6630257 is an apocalyptic number.

It is an amenable number.

6630257 is a deficient number, since it is larger than the sum of its proper divisors (1).

6630257 is an equidigital number, since it uses as much as digits as its factorization.

6630257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 6630257 is about 2574.9285426978. The cubic root of 6630257 is about 187.8639520467.

The spelling of 6630257 in words is "six million, six hundred thirty thousand, two hundred fifty-seven".