80646373 has 2 divisors, whose sum is σ = 80646374. Its totient is φ = 80646372.

The previous prime is 80646367. The next prime is 80646403. The reversal of 80646373 is 37364608.

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., 79977249 + 669124 = 8943^2 + 818^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80646373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80646323) 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 as a sum of consecutive naturals, namely, 40323186 + 40323187.

It is an arithmetic number, because the mean of its divisors is an integer number (40323187).

Almost surely, 2^80646373 is an apocalyptic number.

It is an amenable number.

80646373 is a deficient number, since it is larger than the sum of its proper divisors (1).

80646373 is an equidigital number, since it uses as much as digits as its factorization.

80646373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 80646373 is about 8980.3325662249. The cubic root of 80646373 is about 432.0443002267.

The spelling of 80646373 in words is "eighty million, six hundred forty-six thousand, three hundred seventy-three".