80806663 has 4 divisors (see below), whose sum is σ = 92350480. Its totient is φ = 69262848.

The previous prime is 80806637. The next prime is 80806667. The reversal of 80806663 is 36660808.

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-80806663 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 (80806667) 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, 5771898 + ... + 5771911.

It is an arithmetic number, because the mean of its divisors is an integer number (23087620).

Almost surely, 2^80806663 is an apocalyptic number.

80806663 is a deficient number, since it is larger than the sum of its proper divisors (11543817).

80806663 is a wasteful number, since it uses less digits than its factorization.

80806663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11543816.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 80806663 is about 8989.2526385679. The cubic root of 80806663 is about 432.3303496697.

The spelling of 80806663 in words is "eighty million, eight hundred six thousand, six hundred sixty-three".