2099651 has 8 divisors (see below), whose sum is σ = 2180304. Its totient is φ = 2020480.

The previous prime is 2099641. The next prime is 2099659. The reversal of 2099651 is 1569902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2099651 - 2¹⁴ = 2083267 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2099659) 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, 3095 + ... + 3711.

It is an arithmetic number, because the mean of its divisors is an integer number (272538).

2^2099651 is an apocalyptic number.

2099651 is a deficient number, since it is larger than the sum of its proper divisors (80653).

2099651 is an equidigital number, since it uses as much as digits as its factorization.

2099651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 2099651 is about 1449.0172531754. The cubic root of 2099651 is about 128.0508221037.

The spelling of 2099651 in words is "two million, ninety-nine thousand, six hundred fifty-one".