806490905 has 8 divisors (see below), whose sum is σ = 1055769984. Its totient is φ = 586538800.

The previous prime is 806490871. The next prime is 806490953. The reversal of 806490905 is 509094608.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 806490905 - 2¹⁰ = 806489881 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7331681 + ... + 7331790.

It is an arithmetic number, because the mean of its divisors is an integer number (131971248).

Almost surely, 2^806490905 is an apocalyptic number.

It is an amenable number.

806490905 is a deficient number, since it is larger than the sum of its proper divisors (249279079).

806490905 is a wasteful number, since it uses less digits than its factorization.

806490905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14663487.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 806490905 is about 28398.7835126788. The cubic root of 806490905 is about 930.8216829463.

The spelling of 806490905 in words is "eight hundred six million, four hundred ninety thousand, nine hundred five".