80717680 has 40 divisors (see below), whose sum is σ = 188184384. Its totient is φ = 32198400.

The previous prime is 80717669. The next prime is 80717711. The reversal of 80717680 is 8671708.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33310 + ... + 35650.

Almost surely, 2^80717680 is an apocalyptic number.

80717680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80717680 is an abundant number, since it is smaller than the sum of its proper divisors (107466704).

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

80717680 is a wasteful number, since it uses less digits than its factorization.

80717680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2785 (or 2779 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 80717680 is about 8984.3018649197. The cubic root of 80717680 is about 432.1715996377.

It can be divided in two parts, 8071 and 7680, that added together give a palindrome (15751).

The spelling of 80717680 in words is "eighty million, seven hundred seventeen thousand, six hundred eighty".