806055566 has 4 divisors (see below), whose sum is σ = 1209083352. Its totient is φ = 403027782.

The previous prime is 806055559. The next prime is 806055623. The reversal of 806055566 is 665550608.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201513890 + ... + 201513893.

It is an arithmetic number, because the mean of its divisors is an integer number (302270838).

Almost surely, 2^806055566 is an apocalyptic number.

806055566 is a deficient number, since it is larger than the sum of its proper divisors (403027786).

806055566 is a wasteful number, since it uses less digits than its factorization.

806055566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403027785.

The product of its (nonzero) digits is 216000, while the sum is 41.

The square root of 806055566 is about 28391.1177307270. The cubic root of 806055566 is about 930.6541687965.

The spelling of 806055566 in words is "eight hundred six million, fifty-five thousand, five hundred sixty-six".