2091694 has 16 divisors (see below), whose sum is σ = 3534336. Its totient is φ = 919800.

The previous prime is 2091671. The next prime is 2091703. The reversal of 2091694 is 4961902.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 852 + ... + 2215.

It is an arithmetic number, because the mean of its divisors is an integer number (220896).

2^2091694 is an apocalyptic number.

2091694 is a deficient number, since it is larger than the sum of its proper divisors (1442642).

2091694 is a wasteful number, since it uses less digits than its factorization.

2091694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3111.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 2091694 is about 1446.2689929609. The cubic root of 2091694 is about 127.8888602333. Note that the first 4 decimals are identical.

The spelling of 2091694 in words is "two million, ninety-one thousand, six hundred ninety-four".