805495667 has 4 divisors (see below), whose sum is σ = 818700576. Its totient is φ = 792290760.

The previous prime is 805495631. The next prime is 805495681. The reversal of 805495667 is 766594508.

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

It is a cyclic number.

It is not a de Polignac number, because 805495667 - 2¹² = 805491571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (805495267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6602363 + ... + 6602484.

It is an arithmetic number, because the mean of its divisors is an integer number (204675144).

Almost surely, 2^805495667 is an apocalyptic number.

805495667 is a deficient number, since it is larger than the sum of its proper divisors (13204909).

805495667 is a wasteful number, since it uses less digits than its factorization.

805495667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13204908.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The square root of 805495667 is about 28381.2555571455. The cubic root of 805495667 is about 930.4386364952.

The spelling of 805495667 in words is "eight hundred five million, four hundred ninety-five thousand, six hundred sixty-seven".