2104691 has 4 divisors (see below), whose sum is σ = 2108592. Its totient is φ = 2100792.

The previous prime is 2104679. The next prime is 2104699. The reversal of 2104691 is 1964012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2104691 - 2¹⁰ = 2103667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2104699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 980 + ... + 2273.

It is an arithmetic number, because the mean of its divisors is an integer number (527148).

2^2104691 is an apocalyptic number.

2104691 is a deficient number, since it is larger than the sum of its proper divisors (3901).

2104691 is an equidigital number, since it uses as much as digits as its factorization.

2104691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3900.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 2104691 is about 1450.7553205141. The cubic root of 2104691 is about 128.1531979182.

The spelling of 2104691 in words is "two million, one hundred four thousand, six hundred ninety-one".