80662489 has 2 divisors, whose sum is σ = 80662490. Its totient is φ = 80662488.

The previous prime is 80662441. The next prime is 80662513. The reversal of 80662489 is 98426608.

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., 44662489 + 36000000 = 6683^2 + 6000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80662489 is a prime.

It is not a weakly prime, because it can be changed into another prime (80663489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40331244 + 40331245.

It is an arithmetic number, because the mean of its divisors is an integer number (40331245).

Almost surely, 2^80662489 is an apocalyptic number.

It is an amenable number.

80662489 is a deficient number, since it is larger than the sum of its proper divisors (1).

80662489 is an equidigital number, since it uses as much as digits as its factorization.

80662489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 80662489 is about 8981.2298155653. The cubic root of 80662489 is about 432.0730775580.

The spelling of 80662489 in words is "eighty million, six hundred sixty-two thousand, four hundred eighty-nine".