80711812 has 12 divisors (see below), whose sum is σ = 142566480. Its totient is φ = 39978536.

The previous prime is 80711803. The next prime is 80711819. The reversal of 80711812 is 21811708.

It is not an unprimeable number, because it can be changed into a prime (80711819) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 93862 + ... + 94717.

It is an arithmetic number, because the mean of its divisors is an integer number (11880540).

Almost surely, 2^80711812 is an apocalyptic number.

It is an amenable number.

80711812 is a deficient number, since it is larger than the sum of its proper divisors (61854668).

80711812 is a wasteful number, since it uses less digits than its factorization.

80711812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188690 (or 188688 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 28.

The square root of 80711812 is about 8983.9752893694. The cubic root of 80711812 is about 432.1611267384.

The spelling of 80711812 in words is "eighty million, seven hundred eleven thousand, eight hundred twelve".