8472645 has 12 divisors (see below), whose sum is σ = 14685996. Its totient is φ = 4518720.

The previous prime is 8472631. The next prime is 8472649. The reversal of 8472645 is 5462748.

8472645 is a `hidden beast` number, since 8 + 4 + 7 + 2 + 645 = 666.

8472645 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4809249 + 3663396 = 2193^2 + 1914^2 .

It is not a de Polignac number, because 8472645 - 2⁹ = 8472133 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8472649) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 94096 + ... + 94185.

It is an arithmetic number, because the mean of its divisors is an integer number (1223833).

Almost surely, 2^8472645 is an apocalyptic number.

It is an amenable number.

8472645 is a deficient number, since it is larger than the sum of its proper divisors (6213351).

8472645 is a wasteful number, since it uses less digits than its factorization.

8472645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188292 (or 188289 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 8472645 is about 2910.7808230782. The cubic root of 8472645 is about 203.8635910452.

The spelling of 8472645 in words is "eight million, four hundred seventy-two thousand, six hundred forty-five".