80688277 has 2 divisors, whose sum is σ = 80688278. Its totient is φ = 80688276.

The previous prime is 80688263. The next prime is 80688281. The reversal of 80688277 is 77288608.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76842756 + 3845521 = 8766^2 + 1961^2 .

It is a cyclic number.

It is not a de Polignac number, because 80688277 - 2⁷ = 80688149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80688227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40344138 + 40344139.

It is an arithmetic number, because the mean of its divisors is an integer number (40344139).

Almost surely, 2^80688277 is an apocalyptic number.

It is an amenable number.

80688277 is a deficient number, since it is larger than the sum of its proper divisors (1).

80688277 is an equidigital number, since it uses as much as digits as its factorization.

80688277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 301056, while the sum is 46.

The square root of 80688277 is about 8982.6653616841. The cubic root of 80688277 is about 432.1191176007.

The spelling of 80688277 in words is "eighty million, six hundred eighty-eight thousand, two hundred seventy-seven".