80688305 has 16 divisors (see below), whose sum is σ = 100859904. Its totient is φ = 61911360.

The previous prime is 80688281. The next prime is 80688329. The reversal of 80688305 is 50388608.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (80688281) and next prime (80688329).

It is not a de Polignac number, because 80688305 - 2⁶ = 80688241 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10064 + ... + 16206.

It is an arithmetic number, because the mean of its divisors is an integer number (6303744).

Almost surely, 2^80688305 is an apocalyptic number.

It is an amenable number.

80688305 is a deficient number, since it is larger than the sum of its proper divisors (20171599).

80688305 is a wasteful number, since it uses less digits than its factorization.

80688305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6256.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 80688305 is about 8982.6669202414. Note that the first 3 decimals coincide. The cubic root of 80688305 is about 432.1191675846.

The spelling of 80688305 in words is "eighty million, six hundred eighty-eight thousand, three hundred five".