2659820 has 24 divisors (see below), whose sum is σ = 5914944. Its totient is φ = 1001216.

The previous prime is 2659801. The next prime is 2659841. The reversal of 2659820 is 289562.

2659820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3572 + ... + 4251.

It is an arithmetic number, because the mean of its divisors is an integer number (246456).

2^2659820 is an apocalyptic number.

2659820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2659820 is an abundant number, since it is smaller than the sum of its proper divisors (3255124).

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

2659820 is a wasteful number, since it uses less digits than its factorization.

2659820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7849 (or 7847 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 2659820 is about 1630.8954595559. The cubic root of 2659820 is about 138.5534728163.

The spelling of 2659820 in words is "two million, six hundred fifty-nine thousand, eight hundred twenty".