80620849 has 2 divisors, whose sum is σ = 80620850. Its totient is φ = 80620848.

The previous prime is 80620811. The next prime is 80620861. The reversal of 80620849 is 94802608.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41370624 + 39250225 = 6432^2 + 6265^2 .

It is a cyclic number.

It is not a de Polignac number, because 80620849 - 2⁷ = 80620721 is a prime.

It is not a weakly prime, because it can be changed into another prime (80624849) 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, 40310424 + 40310425.

It is an arithmetic number, because the mean of its divisors is an integer number (40310425).

Almost surely, 2^80620849 is an apocalyptic number.

It is an amenable number.

80620849 is a deficient number, since it is larger than the sum of its proper divisors (1).

80620849 is an equidigital number, since it uses as much as digits as its factorization.

80620849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 80620849 is about 8978.9113482649. The cubic root of 80620849 is about 431.9987157741.

The spelling of 80620849 in words is "eighty million, six hundred twenty thousand, eight hundred forty-nine".