2149660 has 24 divisors (see below), whose sum is σ = 4752720. Its totient is φ = 814464.

The previous prime is 2149621. The next prime is 2149661. The reversal of 2149660 is 669412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149661) 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, 2449 + ... + 3208.

It is an arithmetic number, because the mean of its divisors is an integer number (198030).

2^2149660 is an apocalyptic number.

2149660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2149660 is an abundant number, since it is smaller than the sum of its proper divisors (2603060).

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

2149660 is a wasteful number, since it uses less digits than its factorization.

2149660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5685 (or 5683 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 2149660 is about 1466.1718862398. The cubic root of 2149660 is about 129.0594842145.

It can be divided in two parts, 2149 and 660, that added together give a square (2809 = 53²).

The spelling of 2149660 in words is "two million, one hundred forty-nine thousand, six hundred sixty".