80866046 has 4 divisors (see below), whose sum is σ = 121299072. Its totient is φ = 40433022.

The previous prime is 80866043. The next prime is 80866057. The reversal of 80866046 is 64066808.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80866043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20216510 + ... + 20216513.

It is an arithmetic number, because the mean of its divisors is an integer number (30324768).

Almost surely, 2^80866046 is an apocalyptic number.

80866046 is a deficient number, since it is larger than the sum of its proper divisors (40433026).

80866046 is a wasteful number, since it uses less digits than its factorization.

80866046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40433025.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 80866046 is about 8992.5550318027. Note that the first 3 decimals coincide. The cubic root of 80866046 is about 432.4362270232.

The spelling of 80866046 in words is "eighty million, eight hundred sixty-six thousand, forty-six".