80723273 has 2 divisors, whose sum is σ = 80723274. Its totient is φ = 80723272.

The previous prime is 80723257. The next prime is 80723309. The reversal of 80723273 is 37232708.

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., 56595529 + 24127744 = 7523^2 + 4912^2 .

It is a cyclic number.

It is not a de Polignac number, because 80723273 - 2⁴ = 80723257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (80723213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40361636 + 40361637.

It is an arithmetic number, because the mean of its divisors is an integer number (40361637).

Almost surely, 2^80723273 is an apocalyptic number.

It is an amenable number.

80723273 is a deficient number, since it is larger than the sum of its proper divisors (1).

80723273 is an equidigital number, since it uses as much as digits as its factorization.

80723273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 80723273 is about 8984.6131246704. The cubic root of 80723273 is about 432.1815812590.

The spelling of 80723273 in words is "eighty million, seven hundred twenty-three thousand, two hundred seventy-three".