80616071 has 4 divisors (see below), whose sum is σ = 80642544. Its totient is φ = 80589600.

The previous prime is 80616059. The next prime is 80616131. The reversal of 80616071 is 17061608.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80616071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80616001) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7970 + ... + 14991.

It is an arithmetic number, because the mean of its divisors is an integer number (20160636).

Almost surely, 2^80616071 is an apocalyptic number.

80616071 is a deficient number, since it is larger than the sum of its proper divisors (26473).

80616071 is a wasteful number, since it uses less digits than its factorization.

80616071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26472.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 80616071 is about 8978.6452764323. The cubic root of 80616071 is about 431.9901814612.

Adding to 80616071 its reverse (17061608), we get a palindrome (97677679).

It can be divided in two parts, 8061607 and 1, that added together give a palindrome (8061608).

The spelling of 80616071 in words is "eighty million, six hundred sixteen thousand, seventy-one".