80771690 has 8 divisors (see below), whose sum is σ = 145389060. Its totient is φ = 32308672.

The previous prime is 80771671. The next prime is 80771707. The reversal of 80771690 is 9617708.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 78978769 + 1792921 = 8887^2 + 1339^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×80771690² = 13048131810912200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4038575 + ... + 4038594.

Almost surely, 2^80771690 is an apocalyptic number.

80771690 is a deficient number, since it is larger than the sum of its proper divisors (64617370).

80771690 is a wasteful number, since it uses less digits than its factorization.

80771690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8077176.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 80771690 is about 8987.3071606572. The cubic root of 80771690 is about 432.2679700318.

The spelling of 80771690 in words is "eighty million, seven hundred seventy-one thousand, six hundred ninety".