805866026 has 32 divisors (see below), whose sum is σ = 1398828288. Its totient is φ = 341055360.

The previous prime is 805866023. The next prime is 805866067. The reversal of 805866026 is 620668508.

It is a super-2 number, since 2×805866026² = 1298840103722065352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (805866023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 779606 + ... + 780638.

It is an arithmetic number, because the mean of its divisors is an integer number (43713384).

Almost surely, 2^805866026 is an apocalyptic number.

805866026 is a deficient number, since it is larger than the sum of its proper divisors (592962262).

805866026 is a wasteful number, since it uses less digits than its factorization.

805866026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 805866026 is about 28387.7795186591. The cubic root of 805866026 is about 930.5812168287.

The spelling of 805866026 in words is "eight hundred five million, eight hundred sixty-six thousand, twenty-six".