2194690 has 16 divisors (see below), whose sum is σ = 4158720. Its totient is φ = 831600.

The previous prime is 2194679. The next prime is 2194697. The reversal of 2194690 is 964912.

It is a happy number.

It is a super-2 number, since 2×2194690² = 9633328392200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2194697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5586 + ... + 5965.

It is an arithmetic number, because the mean of its divisors is an integer number (259920).

2^2194690 is an apocalyptic number.

2194690 is a deficient number, since it is larger than the sum of its proper divisors (1964030).

2194690 is a wasteful number, since it uses less digits than its factorization.

2194690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11577.

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

The square root of 2194690 is about 1481.4486153762. The cubic root of 2194690 is about 129.9544218920.

The spelling of 2194690 in words is "two million, one hundred ninety-four thousand, six hundred ninety".