2068640 has 48 divisors (see below), whose sum is σ = 5588352. Its totient is φ = 708864.

The previous prime is 2068639. The next prime is 2068667. The reversal of 2068640 is 468602.

It is a congruent number.

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, 197 + ... + 2043.

It is an arithmetic number, because the mean of its divisors is an integer number (116424).

2^2068640 is an apocalyptic number.

2068640 is a gapful number since it is divisible by the number (20) 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 2068640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2794176).

2068640 is an abundant number, since it is smaller than the sum of its proper divisors (3519712).

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

2068640 is a wasteful number, since it uses less digits than its factorization.

2068640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869 (or 1861 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 2068640 is about 1438.2767466660. The cubic root of 2068640 is about 127.4172730043.

The spelling of 2068640 in words is "two million, sixty-eight thousand, six hundred forty".