80247649 has 2 divisors, whose sum is σ = 80247650. Its totient is φ = 80247648.

The previous prime is 80247581. The next prime is 80247677. The reversal of 80247649 is 94674208.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79977249 + 270400 = 8943^2 + 520^2 .

It is a cyclic number.

It is not a de Polignac number, because 80247649 - 2⁷ = 80247521 is a prime.

It is not a weakly prime, because it can be changed into another prime (80247689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40123824 + 40123825.

It is an arithmetic number, because the mean of its divisors is an integer number (40123825).

Almost surely, 2^80247649 is an apocalyptic number.

It is an amenable number.

80247649 is a deficient number, since it is larger than the sum of its proper divisors (1).

80247649 is an equidigital number, since it uses as much as digits as its factorization.

80247649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 80247649 is about 8958.1052125994. The cubic root of 80247649 is about 431.3310996675.

The spelling of 80247649 in words is "eighty million, two hundred forty-seven thousand, six hundred forty-nine".