870464605 has 4 divisors (see below), whose sum is σ = 1044557532. Its totient is φ = 696371680.

The previous prime is 870464591. The next prime is 870464611. The reversal of 870464605 is 506464078.

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

It can be written as a sum of positive squares in 2 ways, for example, as 103673124 + 766791481 = 10182^2 + 27691^2 .

It is not a de Polignac number, because 870464605 - 2¹⁷ = 870333533 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87046456 + ... + 87046465.

It is an arithmetic number, because the mean of its divisors is an integer number (261139383).

Almost surely, 2^870464605 is an apocalyptic number.

It is an amenable number.

870464605 is a deficient number, since it is larger than the sum of its proper divisors (174092927).

870464605 is a wasteful number, since it uses less digits than its factorization.

870464605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174092926.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 870464605 is about 29503.6371486636. The cubic root of 870464605 is about 954.8101758072.

The spelling of 870464605 in words is "eight hundred seventy million, four hundred sixty-four thousand, six hundred five".