80727071 has 4 divisors (see below), whose sum is σ = 81864144. Its totient is φ = 79590000.

The previous prime is 80727037. The next prime is 80727077. The reversal of 80727071 is 17072708.

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

It is a cyclic number.

It is not a de Polignac number, because 80727071 - 2¹⁴ = 80710687 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 (80727077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 568430 + ... + 568571.

It is an arithmetic number, because the mean of its divisors is an integer number (20466036).

Almost surely, 2^80727071 is an apocalyptic number.

80727071 is a deficient number, since it is larger than the sum of its proper divisors (1137073).

80727071 is a wasteful number, since it uses less digits than its factorization.

80727071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137072.

The product of its (nonzero) digits is 5488, while the sum is 32.

The square root of 80727071 is about 8984.8244835389. The cubic root of 80727071 is about 432.1883591469.

Adding to 80727071 its reverse (17072708), we get a palindrome (97799779).

It can be divided in two parts, 8072707 and 1, that added together give a palindrome (8072708).

The spelling of 80727071 in words is "eighty million, seven hundred twenty-seven thousand, seventy-one".