80776680 has 64 divisors (see below), whose sum is σ = 243734400. Its totient is φ = 21415680.

The previous prime is 80776643. The next prime is 80776721. The reversal of 80776680 is 8667708.

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, 19861 + ... + 23579.

It is an arithmetic number, because the mean of its divisors is an integer number (3808350).

Almost surely, 2^80776680 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 80776680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121867200).

80776680 is an abundant number, since it is smaller than the sum of its proper divisors (162957720).

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

80776680 is a wasteful number, since it uses less digits than its factorization.

80776680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3914 (or 3910 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 80776680 is about 8987.5847701148. The cubic root of 80776680 is about 432.2768715531.

The spelling of 80776680 in words is "eighty million, seven hundred seventy-six thousand, six hundred eighty".