682564991 has 2 divisors, whose sum is σ = 682564992. Its totient is φ = 682564990.

The previous prime is 682564933. The next prime is 682564999. The reversal of 682564991 is 199465286.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 682564991 - 2²² = 678370687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (682564999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341282495 + 341282496.

It is an arithmetic number, because the mean of its divisors is an integer number (341282496).

Almost surely, 2^682564991 is an apocalyptic number.

682564991 is a deficient number, since it is larger than the sum of its proper divisors (1).

682564991 is an equidigital number, since it uses as much as digits as its factorization.

682564991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 50.

The square root of 682564991 is about 26125.9447867441. The cubic root of 682564991 is about 880.4702165902.

The spelling of 682564991 in words is "six hundred eighty-two million, five hundred sixty-four thousand, nine hundred ninety-one".