80845673 has 2 divisors, whose sum is σ = 80845674. Its totient is φ = 80845672.

The previous prime is 80845663. The next prime is 80845691. The reversal of 80845673 is 37654808.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45657049 + 35188624 = 6757^2 + 5932^2 .

It is a cyclic number.

It is not a de Polignac number, because 80845673 - 2⁴ = 80845657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80845673.

It is not a weakly prime, because it can be changed into another prime (80845603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40422836 + 40422837.

It is an arithmetic number, because the mean of its divisors is an integer number (40422837).

Almost surely, 2^80845673 is an apocalyptic number.

It is an amenable number.

80845673 is a deficient number, since it is larger than the sum of its proper divisors (1).

80845673 is an equidigital number, since it uses as much as digits as its factorization.

80845673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 80845673 is about 8991.4221900654. The cubic root of 80845673 is about 432.3999086768.

It can be divided in two parts, 80845 and 673, that added together give a palindrome (81518).

The spelling of 80845673 in words is "eighty million, eight hundred forty-five thousand, six hundred seventy-three".