1068664957 has 2 divisors, whose sum is σ = 1068664958. Its totient is φ = 1068664956.

The previous prime is 1068664913. The next prime is 1068664963. The reversal of 1068664957 is 7594668601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 780140761 + 288524196 = 27931^2 + 16986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1068664957 is a prime.

It is a super-2 number, since 2×1068664957² = 2284089580639623698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1068664907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534332478 + 534332479.

It is an arithmetic number, because the mean of its divisors is an integer number (534332479).

Almost surely, 2^1068664957 is an apocalyptic number.

It is an amenable number.

1068664957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1068664957 is an equidigital number, since it uses as much as digits as its factorization.

1068664957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The square root of 1068664957 is about 32690.4413705291. The cubic root of 1068664957 is about 1022.3835571394.

The spelling of 1068664957 in words is "one billion, sixty-eight million, six hundred sixty-four thousand, nine hundred fifty-seven".