2099646 has 24 divisors (see below), whose sum is σ = 4619784. Its totient is φ = 689040.

The previous prime is 2099641. The next prime is 2099659. The reversal of 2099646 is 6469902.

2099646 is a `hidden beast` number, since 2 + 0 + 9 + 9 + 646 = 666.

It is a d-powerful number, because it can be written as 2²¹ + 0 + 9³ + 9³ + 6 + 4⁵ + 6 .

It is a self number, because there is not a number n which added to its sum of digits gives 2099646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2099641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 336 + ... + 2076.

It is an arithmetic number, because the mean of its divisors is an integer number (192491).

2^2099646 is an apocalyptic number.

2099646 is an abundant number, since it is smaller than the sum of its proper divisors (2520138).

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

2099646 is a wasteful number, since it uses less digits than its factorization.

2099646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1816 (or 1813 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 2099646 is about 1449.0155278671. The cubic root of 2099646 is about 128.0507204591.

The spelling of 2099646 in words is "two million, ninety-nine thousand, six hundred forty-six".