2290660 has 24 divisors (see below), whose sum is σ = 4903416. Its totient is φ = 898560.

The previous prime is 2290649. The next prime is 2290703. The reversal of 2290660 is 660922.

It can be written as a sum of positive squares in 4 ways, for example, as 527076 + 1763584 = 726^2 + 1328^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

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, 21 + ... + 2140.

It is an arithmetic number, because the mean of its divisors is an integer number (204309).

2^2290660 is an apocalyptic number.

2290660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2290660 is an abundant number, since it is smaller than the sum of its proper divisors (2612756).

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

2290660 is a wasteful number, since it uses less digits than its factorization.

2290660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223 (or 2221 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 2290660 is about 1513.4926494701. The cubic root of 2290660 is about 131.8216906788.

The spelling of 2290660 in words is "two million, two hundred ninety thousand, six hundred sixty".