2281665 has 8 divisors (see below), whose sum is σ = 3650688. Its totient is φ = 1216880.

The previous prime is 2281663. The next prime is 2281667. The reversal of 2281665 is 5661822.

It is an interprime number because it is at equal distance from previous prime (2281663) and next prime (2281667).

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

It is not a de Polignac number, because 2281665 - 2¹ = 2281663 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2281661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76041 + ... + 76070.

It is an arithmetic number, because the mean of its divisors is an integer number (456336).

2^2281665 is an apocalyptic number.

It is an amenable number.

2281665 is a deficient number, since it is larger than the sum of its proper divisors (1369023).

2281665 is a wasteful number, since it uses less digits than its factorization.

2281665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152119.

The product of its digits is 5760, while the sum is 30.

The square root of 2281665 is about 1510.5181230293. The cubic root of 2281665 is about 131.6489178304.

The spelling of 2281665 in words is "two million, two hundred eighty-one thousand, six hundred sixty-five".