80688281 has 2 divisors, whose sum is σ = 80688282. Its totient is φ = 80688280.

The previous prime is 80688277. The next prime is 80688329. The reversal of 80688281 is 18288608.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79049881 + 1638400 = 8891^2 + 1280^2 .

It is a cyclic number.

It is not a de Polignac number, because 80688281 - 2² = 80688277 is a prime.

It is a super-2 number, since 2×80688281² = 13021197381469922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80688241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40344140 + 40344141.

It is an arithmetic number, because the mean of its divisors is an integer number (40344141).

Almost surely, 2^80688281 is an apocalyptic number.

It is an amenable number.

80688281 is a deficient number, since it is larger than the sum of its proper divisors (1).

80688281 is an equidigital number, since it uses as much as digits as its factorization.

80688281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49152, while the sum is 41.

The square root of 80688281 is about 8982.6655843352. The cubic root of 80688281 is about 432.1191247413.

The spelling of 80688281 in words is "eighty million, six hundred eighty-eight thousand, two hundred eighty-one".