80660871 has 24 divisors (see below), whose sum is σ = 123006000. Its totient is φ = 50792832.

The previous prime is 80660863. The next prime is 80660887. The reversal of 80660871 is 17806608.

It is not a de Polignac number, because 80660871 - 2³ = 80660863 is a prime.

It is a super-2 number, since 2×80660871² = 13012352220957282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80660821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96885 + ... + 97713.

It is an arithmetic number, because the mean of its divisors is an integer number (5125250).

Almost surely, 2^80660871 is an apocalyptic number.

80660871 is a deficient number, since it is larger than the sum of its proper divisors (42345129).

80660871 is a wasteful number, since it uses less digits than its factorization.

80660871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423 (or 1420 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 80660871 is about 8981.1397383628. The cubic root of 80660871 is about 432.0701885699.

The spelling of 80660871 in words is "eighty million, six hundred sixty thousand, eight hundred seventy-one".