80450666 has 4 divisors (see below), whose sum is σ = 120676002. Its totient is φ = 40225332.

The previous prime is 80450653. The next prime is 80450683. The reversal of 80450666 is 66605408.

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., 77810041 + 2640625 = 8821^2 + 1625^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20112665 + ... + 20112668.

Almost surely, 2^80450666 is an apocalyptic number.

80450666 is a deficient number, since it is larger than the sum of its proper divisors (40225336).

80450666 is a wasteful number, since it uses less digits than its factorization.

80450666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40225335.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 80450666 is about 8969.4295247803. The cubic root of 80450666 is about 431.6945321394.

The spelling of 80450666 in words is "eighty million, four hundred fifty thousand, six hundred sixty-six".