2146660 has 24 divisors (see below), whose sum is σ = 4540536. Its totient is φ = 852480.

The previous prime is 2146633. The next prime is 2146663. The reversal of 2146660 is 666412.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3364 + 2143296 = 58^2 + 1464^2 .

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (2146663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3324 + ... + 3916.

It is an arithmetic number, because the mean of its divisors is an integer number (189189).

2^2146660 is an apocalyptic number.

2146660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2146660 is an abundant number, since it is smaller than the sum of its proper divisors (2393876).

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

2146660 is a wasteful number, since it uses less digits than its factorization.

2146660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783 (or 781 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 2146660 is about 1465.1484566419. The cubic root of 2146660 is about 128.9994191028. Note that the first 3 decimals are identical.

The spelling of 2146660 in words is "two million, one hundred forty-six thousand, six hundred sixty".