80812868 has 6 divisors (see below), whose sum is σ = 141422526. Its totient is φ = 40406432.

The previous prime is 80812859. The next prime is 80812891. The reversal of 80812868 is 86821808.

It can be written as a sum of positive squares in only one way, i.e., 73239364 + 7573504 = 8558^2 + 2752^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101605 + ... + 10101612.

It is an arithmetic number, because the mean of its divisors is an integer number (23570421).

Almost surely, 2^80812868 is an apocalyptic number.

It is an amenable number.

80812868 is a deficient number, since it is larger than the sum of its proper divisors (60609658).

80812868 is a wasteful number, since it uses less digits than its factorization.

80812868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20203221 (or 20203219 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 41.

The square root of 80812868 is about 8989.5977663075. The cubic root of 80812868 is about 432.3414153462.

The spelling of 80812868 in words is "eighty million, eight hundred twelve thousand, eight hundred sixty-eight".