80711680 has 104 divisors (see below), whose sum is σ = 221746752. Its totient is φ = 27623424.

The previous prime is 80711641. The next prime is 80711681. The reversal of 80711680 is 8611708.

It is not an unprimeable number, because it can be changed into a prime (80711681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143079 + ... + 143641.

Almost surely, 2^80711680 is an apocalyptic number.

80711680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80711680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110873376).

80711680 is an abundant number, since it is smaller than the sum of its proper divisors (141035072).

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

80711680 is an equidigital number, since it uses as much as digits as its factorization.

80711680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 80711680 is about 8983.9679429526. The cubic root of 80711680 is about 432.1608911459.

The spelling of 80711680 in words is "eighty million, seven hundred eleven thousand, six hundred eighty".