80809711 has 4 divisors (see below), whose sum is σ = 80959624. Its totient is φ = 80659800.

The previous prime is 80809709. The next prime is 80809727. The reversal of 80809711 is 11790808.

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 80809711 - 2¹ = 80809709 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 (80839711) 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, 74145 + ... + 75226.

It is an arithmetic number, because the mean of its divisors is an integer number (20239906).

Almost surely, 2^80809711 is an apocalyptic number.

80809711 is a deficient number, since it is larger than the sum of its proper divisors (149913).

80809711 is a wasteful number, since it uses less digits than its factorization.

80809711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149912.

The product of its (nonzero) digits is 4032, while the sum is 34.

The square root of 80809711 is about 8989.4221727539. The cubic root of 80809711 is about 432.3357853863.

The spelling of 80809711 in words is "eighty million, eight hundred nine thousand, seven hundred eleven".