80806869 has 32 divisors (see below), whose sum is σ = 140649600. Its totient is φ = 45204480.

The previous prime is 80806861. The next prime is 80806877. The reversal of 80806869 is 96860808.

It is an interprime number because it is at equal distance from previous prime (80806861) and next prime (80806877).

It is not a de Polignac number, because 80806869 - 2³ = 80806861 is a prime.

It is a super-2 number, since 2×80806869² = 13059500155166322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80806861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6604 + ... + 14325.

It is an arithmetic number, because the mean of its divisors is an integer number (4395300).

Almost surely, 2^80806869 is an apocalyptic number.

It is an amenable number.

80806869 is a deficient number, since it is larger than the sum of its proper divisors (59842731).

80806869 is a wasteful number, since it uses less digits than its factorization.

80806869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20962 (or 20956 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 80806869 is about 8989.2640966878. The cubic root of 80806869 is about 432.3307170486.

The spelling of 80806869 in words is "eighty million, eight hundred six thousand, eight hundred sixty-nine".