80817213 has 16 divisors (see below), whose sum is σ = 111015936. Its totient is φ = 52257600.

The previous prime is 80817211. The next prime is 80817263. The reversal of 80817213 is 31271808.

It is a happy number.

It is not a de Polignac number, because 80817213 - 2¹ = 80817211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80817211) 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 in 15 ways as a sum of consecutive naturals, for example, 41563 + ... + 43463.

It is an arithmetic number, because the mean of its divisors is an integer number (6938496).

Almost surely, 2^80817213 is an apocalyptic number.

It is an amenable number.

80817213 is a deficient number, since it is larger than the sum of its proper divisors (30198723).

80817213 is a wasteful number, since it uses less digits than its factorization.

80817213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 80817213 is about 8989.8394312691. The cubic root of 80817213 is about 432.3491636575.

The spelling of 80817213 in words is "eighty million, eight hundred seventeen thousand, two hundred thirteen".