8280665 has 8 divisors (see below), whose sum is σ = 9989448. Its totient is φ = 6589440.

The previous prime is 8280653. The next prime is 8280677. The reversal of 8280665 is 5660828.

It is an interprime number because it is at equal distance from previous prime (8280653) and next prime (8280677).

It can be written as a sum of positive squares in 4 ways, for example, as 322624 + 7958041 = 568^2 + 2821^2 .

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

It is not a de Polignac number, because 8280665 - 2¹⁰ = 8279641 is a prime.

It is a Duffinian number.

It is a congruent 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, 3326 + ... + 5255.

It is an arithmetic number, because the mean of its divisors is an integer number (1248681).

Almost surely, 2^8280665 is an apocalyptic number.

It is an amenable number.

8280665 is a deficient number, since it is larger than the sum of its proper divisors (1708783).

8280665 is a wasteful number, since it uses less digits than its factorization.

8280665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8779.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 8280665 is about 2877.6144634054. The cubic root of 8280665 is about 202.3120442637.

The spelling of 8280665 in words is "eight million, two hundred eighty thousand, six hundred sixty-five".