80620811 has 2 divisors, whose sum is σ = 80620812. Its totient is φ = 80620810.

The previous prime is 80620807. The next prime is 80620849. The reversal of 80620811 is 11802608.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80620811 - 2² = 80620807 is a prime.

It is a Sophie Germain prime.

It is a zygodrome in base 6.

It is not a weakly prime, because it can be changed into another prime (80620861) 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, 40310405 + 40310406.

It is an arithmetic number, because the mean of its divisors is an integer number (40310406).

Almost surely, 2^80620811 is an apocalyptic number.

80620811 is a deficient number, since it is larger than the sum of its proper divisors (1).

80620811 is an equidigital number, since it uses as much as digits as its factorization.

80620811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 80620811 is about 8978.9092321952. The cubic root of 80620811 is about 431.9986479010.

The spelling of 80620811 in words is "eighty million, six hundred twenty thousand, eight hundred eleven".