8281345 has 8 divisors (see below), whose sum is σ = 9953064. Its totient is φ = 6614784.

The previous prime is 8281319. The next prime is 8281367. The reversal of 8281345 is 5431828.

It can be written as a sum of positive squares in 4 ways, for example, as 3984016 + 4297329 = 1996^2 + 2073^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8281345 - 2⁵ = 8281313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5737 + ... + 7033.

It is an arithmetic number, because the mean of its divisors is an integer number (1244133).

Almost surely, 2^8281345 is an apocalyptic number.

It is an amenable number.

8281345 is a deficient number, since it is larger than the sum of its proper divisors (1671719).

8281345 is a wasteful number, since it uses less digits than its factorization.

8281345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2579.

The product of its digits is 7680, while the sum is 31.

The square root of 8281345 is about 2877.7326144032. The cubic root of 8281345 is about 202.3175820003.

The spelling of 8281345 in words is "eight million, two hundred eighty-one thousand, three hundred forty-five".