2091653 has 8 divisors (see below), whose sum is σ = 2215200. Its totient is φ = 1969488.

The previous prime is 2091637. The next prime is 2091659. The reversal of 2091653 is 3561902.

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

It is a cyclic number.

It is not a de Polignac number, because 2091653 - 2⁴ = 2091637 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 (2091659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5183 + ... + 5571.

It is an arithmetic number, because the mean of its divisors is an integer number (276900).

2^2091653 is an apocalyptic number.

It is an amenable number.

2091653 is a deficient number, since it is larger than the sum of its proper divisors (123547).

2091653 is a wasteful number, since it uses less digits than its factorization.

2091653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 2091653 is about 1446.2548184881. The cubic root of 2091653 is about 127.8880246303. Note that the first 3 decimals are identical.

It can be divided in two parts, 2091 and 653, that added together give a cube (2744 = 14³).

The spelling of 2091653 in words is "two million, ninety-one thousand, six hundred fifty-three".