80636317 has 2 divisors, whose sum is σ = 80636318. Its totient is φ = 80636316.

The previous prime is 80636273. The next prime is 80636329. The reversal of 80636317 is 71363608.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68657796 + 11978521 = 8286^2 + 3461^2 .

It is a cyclic number.

It is not a de Polignac number, because 80636317 - 2¹¹ = 80634269 is a prime.

It is a super-4 number, since 4×80636317⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80630317) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40318158 + 40318159.

It is an arithmetic number, because the mean of its divisors is an integer number (40318159).

Almost surely, 2^80636317 is an apocalyptic number.

It is an amenable number.

80636317 is a deficient number, since it is larger than the sum of its proper divisors (1).

80636317 is an equidigital number, since it uses as much as digits as its factorization.

80636317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 80636317 is about 8979.7726585922. The cubic root of 80636317 is about 432.0263419151.

The spelling of 80636317 in words is "eighty million, six hundred thirty-six thousand, three hundred seventeen".