80802866 has 4 divisors (see below), whose sum is σ = 121204302. Its totient is φ = 40401432.

The previous prime is 80802863. The next prime is 80802881. The reversal of 80802866 is 66820808.

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

It can be written as a sum of positive squares in only one way, i.e., 44502241 + 36300625 = 6671^2 + 6025^2 .

It is not an unprimeable number, because it can be changed into a prime (80802863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20200715 + ... + 20200718.

Almost surely, 2^80802866 is an apocalyptic number.

80802866 is a deficient number, since it is larger than the sum of its proper divisors (40401436).

80802866 is a wasteful number, since it uses less digits than its factorization.

80802866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40401435.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 80802866 is about 8989.0414394417. The cubic root of 80802866 is about 432.3235780167.

The spelling of 80802866 in words is "eighty million, eight hundred two thousand, eight hundred sixty-six".