8288645 has 4 divisors (see below), whose sum is σ = 9946380. Its totient is φ = 6630912.

The previous prime is 8288633. The next prime is 8288647. The reversal of 8288645 is 5468828.

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 2989441 + 5299204 = 1729^2 + 2302^2 .

It is a cyclic number.

It is not a de Polignac number, because 8288645 - 2¹⁴ = 8272261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8288647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 828860 + ... + 828869.

It is an arithmetic number, because the mean of its divisors is an integer number (2486595).

Almost surely, 2^8288645 is an apocalyptic number.

It is an amenable number.

8288645 is a deficient number, since it is larger than the sum of its proper divisors (1657735).

8288645 is a wasteful number, since it uses less digits than its factorization.

8288645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657734.

The product of its digits is 122880, while the sum is 41.

The square root of 8288645 is about 2879.0006946856. Note that the first 3 decimals coincide. The cubic root of 8288645 is about 202.3770121450.

The spelling of 8288645 in words is "eight million, two hundred eighty-eight thousand, six hundred forty-five".