80868811 has 4 divisors (see below), whose sum is σ = 82589472. Its totient is φ = 79148152.

The previous prime is 80868797. The next prime is 80868829. The reversal of 80868811 is 11886808.

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 80868811 - 2¹¹ = 80866763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80868841) 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, 860260 + ... + 860353.

It is an arithmetic number, because the mean of its divisors is an integer number (20647368).

Almost surely, 2^80868811 is an apocalyptic number.

80868811 is a deficient number, since it is larger than the sum of its proper divisors (1720661).

80868811 is a wasteful number, since it uses less digits than its factorization.

80868811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720660.

The product of its (nonzero) digits is 24576, while the sum is 40.

The square root of 80868811 is about 8992.7087687748. The cubic root of 80868811 is about 432.4411556371.

The spelling of 80868811 in words is "eighty million, eight hundred sixty-eight thousand, eight hundred eleven".