8474645 has 4 divisors (see below), whose sum is σ = 10169580. Its totient is φ = 6779712.

The previous prime is 8474633. The next prime is 8474651. The reversal of 8474645 is 5464748.

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 2053489 + 6421156 = 1433^2 + 2534^2 .

It is a cyclic number.

It is not a de Polignac number, because 8474645 - 2⁶ = 8474581 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8474599 and 8474608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 847460 + ... + 847469.

It is an arithmetic number, because the mean of its divisors is an integer number (2542395).

Almost surely, 2^8474645 is an apocalyptic number.

It is an amenable number.

8474645 is a deficient number, since it is larger than the sum of its proper divisors (1694935).

8474645 is a wasteful number, since it uses less digits than its factorization.

8474645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694934.

The product of its digits is 107520, while the sum is 38.

The square root of 8474645 is about 2911.1243532354. The cubic root of 8474645 is about 203.8796307079.

It can be divided in two parts, 8474 and 645, that added together give a palindrome (9119).

The spelling of 8474645 in words is "eight million, four hundred seventy-four thousand, six hundred forty-five".