2098691 has 8 divisors (see below), whose sum is σ = 2449920. Its totient is φ = 1760328.

The previous prime is 2098687. The next prime is 2098693. The reversal of 2098691 is 1968902.

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 2098691 - 2² = 2098687 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 0 + 9² + 8³ + 6³ + 9³ + 1 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2098693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2861 + ... + 3518.

It is an arithmetic number, because the mean of its divisors is an integer number (306240).

2^2098691 is an apocalyptic number.

2098691 is a deficient number, since it is larger than the sum of its proper divisors (351229).

2098691 is an equidigital number, since it uses as much as digits as its factorization.

2098691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6433.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 2098691 is about 1448.6859563066. The cubic root of 2098691 is about 128.0313033791.

The spelling of 2098691 in words is "two million, ninety-eight thousand, six hundred ninety-one".