80686373 has 2 divisors, whose sum is σ = 80686374. Its totient is φ = 80686372.

The previous prime is 80686351. The next prime is 80686379. The reversal of 80686373 is 37368608.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65577604 + 15108769 = 8098^2 + 3887^2 .

It is a cyclic number.

It is not a de Polignac number, because 80686373 - 2⁸ = 80686117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80686373.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80686379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40343186 + 40343187.

It is an arithmetic number, because the mean of its divisors is an integer number (40343187).

Almost surely, 2^80686373 is an apocalyptic number.

It is an amenable number.

80686373 is a deficient number, since it is larger than the sum of its proper divisors (1).

80686373 is an equidigital number, since it uses as much as digits as its factorization.

80686373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 80686373 is about 8982.5593791525. The cubic root of 80686373 is about 432.1157186713.

It can be divided in two parts, 8068 and 6373, that added together give a palindrome (14441).

The spelling of 80686373 in words is "eighty million, six hundred eighty-six thousand, three hundred seventy-three".