8081680 has 20 divisors (see below), whose sum is σ = 18790092. Its totient is φ = 3232640.

The previous prime is 8081663. The next prime is 8081699. The reversal of 8081680 is 861808.

It can be written as a sum of positive squares in 2 ways, for example, as 1048576 + 7033104 = 1024^2 + 2652^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50431 + ... + 50590.

Almost surely, 2^8081680 is an apocalyptic number.

8081680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8081680 is an abundant number, since it is smaller than the sum of its proper divisors (10708412).

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

8081680 is a wasteful number, since it uses less digits than its factorization.

8081680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101034 (or 101028 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 8081680 is about 2842.8295763200. The cubic root of 8081680 is about 200.6783631822.

The spelling of 8081680 in words is "eight million, eighty-one thousand, six hundred eighty".