80766866 has 8 divisors (see below), whose sum is σ = 121447740. Its totient is φ = 40284288.

The previous prime is 80766839. The next prime is 80766883. The reversal of 80766866 is 66866708.

It can be written as a sum of positive squares in 2 ways, for example, as 80371225 + 395641 = 8965^2 + 629^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 80766866.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48551 + ... + 50186.

Almost surely, 2^80766866 is an apocalyptic number.

80766866 is a deficient number, since it is larger than the sum of its proper divisors (40680874).

80766866 is a wasteful number, since it uses less digits than its factorization.

80766866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99148.

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 80766866 is about 8987.0387781516. The cubic root of 80766866 is about 432.2593642848.

The spelling of 80766866 in words is "eighty million, seven hundred sixty-six thousand, eight hundred sixty-six".