80765173 has 2 divisors, whose sum is σ = 80765174. Its totient is φ = 80765172.

The previous prime is 80765171. The next prime is 80765177. The reversal of 80765173 is 37156708.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75916369 + 4848804 = 8713^2 + 2202^2 .

It is a cyclic number.

It is not a de Polignac number, because 80765173 - 2¹ = 80765171 is a prime.

Together with 80765171, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80765171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40382586 + 40382587.

It is an arithmetic number, because the mean of its divisors is an integer number (40382587).

Almost surely, 2^80765173 is an apocalyptic number.

It is an amenable number.

80765173 is a deficient number, since it is larger than the sum of its proper divisors (1).

80765173 is an equidigital number, since it uses as much as digits as its factorization.

80765173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 80765173 is about 8986.9445864543. The cubic root of 80765173 is about 432.2563439859.

The spelling of 80765173 in words is "eighty million, seven hundred sixty-five thousand, one hundred seventy-three".