1694404 has 6 divisors (see below), whose sum is σ = 2965214. Its totient is φ = 847200.

The previous prime is 1694393. The next prime is 1694423. The reversal of 1694404 is 4044961.

It can be written as a sum of positive squares in only one way, i.e., 1557504 + 136900 = 1248^2 + 370^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211797 + ... + 211804.

2^1694404 is an apocalyptic number.

It is an amenable number.

1694404 is a deficient number, since it is larger than the sum of its proper divisors (1270810).

1694404 is a wasteful number, since it uses less digits than its factorization.

1694404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423605 (or 423603 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1694404 is about 1301.6927440836. The cubic root of 1694404 is about 119.2172197095.

The spelling of 1694404 in words is "one million, six hundred ninety-four thousand, four hundred four".