80688312 has 80 divisors (see below), whose sum is σ = 227383200. Its totient is φ = 26732160.

The previous prime is 80688281. The next prime is 80688329. The reversal of 80688312 is 21388608.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 154612 + ... + 155132.

It is an arithmetic number, because the mean of its divisors is an integer number (2842290).

Almost surely, 2^80688312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80688312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113691600).

80688312 is an abundant number, since it is smaller than the sum of its proper divisors (146694888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80688312 is a wasteful number, since it uses less digits than its factorization.

80688312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778 (or 765 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 80688312 is about 8982.6673098807. The cubic root of 80688312 is about 432.1191800806.

The spelling of 80688312 in words is "eighty million, six hundred eighty-eight thousand, three hundred twelve".