2159646 has 32 divisors (see below), whose sum is σ = 4727808. Its totient is φ = 654720.

The previous prime is 2159639. The next prime is 2159669. The reversal of 2159646 is 6469512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2821 + ... + 3503.

It is an arithmetic number, because the mean of its divisors is an integer number (147744).

2^2159646 is an apocalyptic number.

2159646 is an abundant number, since it is smaller than the sum of its proper divisors (2568162).

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

2159646 is a wasteful number, since it uses less digits than its factorization.

2159646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736.

The product of its digits is 12960, while the sum is 33.

The square root of 2159646 is about 1469.5734074894. The cubic root of 2159646 is about 129.2590192579.

The spelling of 2159646 in words is "two million, one hundred fifty-nine thousand, six hundred forty-six".