80771868 has 18 divisors (see below), whose sum is σ = 204173424. Its totient is φ = 26923944.

The previous prime is 80771843. The next prime is 80771893. The reversal of 80771868 is 86817708.

It is an interprime number because it is at equal distance from previous prime (80771843) and next prime (80771893).

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent 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 5 ways as a sum of consecutive naturals, for example, 1121796 + ... + 1121867.

It is an arithmetic number, because the mean of its divisors is an integer number (11342968).

Almost surely, 2^80771868 is an apocalyptic number.

It is an amenable number.

80771868 is an abundant number, since it is smaller than the sum of its proper divisors (123401556).

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

80771868 is a wasteful number, since it uses less digits than its factorization.

80771868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2243673 (or 2243668 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The square root of 80771868 is about 8987.3170635068. The cubic root of 80771868 is about 432.2682875674.

The spelling of 80771868 in words is "eighty million, seven hundred seventy-one thousand, eight hundred sixty-eight".