80628973 has 2 divisors, whose sum is σ = 80628974. Its totient is φ = 80628972.

The previous prime is 80628971. The next prime is 80628979. The reversal of 80628973 is 37982608.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80514729 + 114244 = 8973^2 + 338^2 .

It is a cyclic number.

It is not a de Polignac number, because 80628973 - 2¹ = 80628971 is a prime.

Together with 80628971, 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 (80628971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40314486 + 40314487.

It is an arithmetic number, because the mean of its divisors is an integer number (40314487).

Almost surely, 2^80628973 is an apocalyptic number.

It is an amenable number.

80628973 is a deficient number, since it is larger than the sum of its proper divisors (1).

80628973 is an equidigital number, since it uses as much as digits as its factorization.

80628973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 80628973 is about 8979.3637302428. The cubic root of 80628973 is about 432.0132258325.

The spelling of 80628973 in words is "eighty million, six hundred twenty-eight thousand, nine hundred seventy-three".