68577571 has 2 divisors, whose sum is σ = 68577572. Its totient is φ = 68577570.

The previous prime is 68577563. The next prime is 68577577. The reversal of 68577571 is 17577586.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68577571 - 2³ = 68577563 is a prime.

It is not a weakly prime, because it can be changed into another prime (68577577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34288785 + 34288786.

It is an arithmetic number, because the mean of its divisors is an integer number (34288786).

Almost surely, 2^68577571 is an apocalyptic number.

68577571 is a deficient number, since it is larger than the sum of its proper divisors (1).

68577571 is an equidigital number, since it uses as much as digits as its factorization.

68577571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 411600, while the sum is 46.

The square root of 68577571 is about 8281.1575881636. The cubic root of 68577571 is about 409.3178643412.

The spelling of 68577571 in words is "sixty-eight million, five hundred seventy-seven thousand, five hundred seventy-one".