80605071 has 8 divisors (see below), whose sum is σ = 119414960. Its totient is φ = 53736696.

The previous prime is 80605039. The next prime is 80605073. The reversal of 80605071 is 17050608.

It is not a de Polignac number, because 80605071 - 2⁵ = 80605039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2985373 = 80605071 / (8 + 0 + 6 + 0 + 5 + 0 + 7 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80605073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1492660 + ... + 1492713.

It is an arithmetic number, because the mean of its divisors is an integer number (14926870).

Almost surely, 2^80605071 is an apocalyptic number.

80605071 is a deficient number, since it is larger than the sum of its proper divisors (38809889).

80605071 is a wasteful number, since it uses less digits than its factorization.

80605071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2985382 (or 2985376 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 80605071 is about 8978.0326909630. The cubic root of 80605071 is about 431.9705323264.

Adding to 80605071 its reverse (17050608), we get a palindrome (97655679).

It can be divided in two parts, 8060 and 5071, that added together give a palindrome (13131).

The spelling of 80605071 in words is "eighty million, six hundred five thousand, seventy-one".