1064660257 has 2 divisors, whose sum is σ = 1064660258. Its totient is φ = 1064660256.

The previous prime is 1064660227. The next prime is 1064660273. The reversal of 1064660257 is 7520664601.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 737448336 + 327211921 = 27156^2 + 18089^2 .

It is an emirp because it is prime and its reverse (7520664601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1064660257 - 2¹¹ = 1064658209 is a prime.

It is a super-2 number, since 2×1064660257² = 2267002925670612098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1064660227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532330128 + 532330129.

It is an arithmetic number, because the mean of its divisors is an integer number (532330129).

Almost surely, 2^1064660257 is an apocalyptic number.

It is an amenable number.

1064660257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1064660257 is an equidigital number, since it uses as much as digits as its factorization.

1064660257 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 37.

The square root of 1064660257 is about 32629.1320295223. The cubic root of 1064660257 is about 1021.1048699840.

The spelling of 1064660257 in words is "one billion, sixty-four million, six hundred sixty thousand, two hundred fifty-seven".