806408855 has 16 divisors (see below), whose sum is σ = 1170987840. Its totient is φ = 520438272.

The previous prime is 806408843. The next prime is 806408861. The reversal of 806408855 is 558804608.

It is not a de Polignac number, because 806408855 - 2⁴ = 806408839 is a prime.

It is a super-2 number, since 2×806408855² = 1300590482844822050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 677060 + ... + 678249.

It is an arithmetic number, because the mean of its divisors is an integer number (73186740).

Almost surely, 2^806408855 is an apocalyptic number.

806408855 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

806408855 is a deficient number, since it is larger than the sum of its proper divisors (364578985).

806408855 is a wasteful number, since it uses less digits than its factorization.

806408855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355338.

The product of its (nonzero) digits is 307200, while the sum is 44.

The square root of 806408855 is about 28397.3388718028. The cubic root of 806408855 is about 930.7901155272.

The spelling of 806408855 in words is "eight hundred six million, four hundred eight thousand, eight hundred fifty-five".