662722589 has 2 divisors, whose sum is σ = 662722590. Its totient is φ = 662722588.

The previous prime is 662722549. The next prime is 662722597. The reversal of 662722589 is 985227266.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 459888025 + 202834564 = 21445^2 + 14242^2 .

It is a cyclic number.

It is not a de Polignac number, because 662722589 - 2²⁴ = 645945373 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (662722519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331361294 + 331361295.

It is an arithmetic number, because the mean of its divisors is an integer number (331361295).

Almost surely, 2^662722589 is an apocalyptic number.

It is an amenable number.

662722589 is a deficient number, since it is larger than the sum of its proper divisors (1).

662722589 is an equidigital number, since it uses as much as digits as its factorization.

662722589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 47.

The square root of 662722589 is about 25743.3989403109. The cubic root of 662722589 is about 871.8543216260.

The spelling of 662722589 in words is "six hundred sixty-two million, seven hundred twenty-two thousand, five hundred eighty-nine".