2665224 has 56 divisors (see below), whose sum is σ = 7508910. Its totient is φ = 886464.

The previous prime is 2665199. The next prime is 2665231. The reversal of 2665224 is 4225662.

2665224 is a `hidden beast` number, since 2 + 6 + 652 + 2 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1822500 + 842724 = 1350^2 + 918^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 5604 + ... + 6060.

2^2665224 is an apocalyptic number.

2665224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2665224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3754455).

2665224 is an abundant number, since it is smaller than the sum of its proper divisors (4843686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2665224 is an equidigital number, since it uses as much as digits as its factorization.

2665224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481 (or 462 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 2665224 is about 1632.5513774457. The cubic root of 2665224 is about 138.6472431292.

The spelling of 2665224 in words is "two million, six hundred sixty-five thousand, two hundred twenty-four".