1697994 has 48 divisors (see below), whose sum is σ = 4043520. Its totient is φ = 512640.

The previous prime is 1697989. The next prime is 1698001. The reversal of 1697994 is 4997961.

It is an Ulam number.

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 in 23 ways as a sum of consecutive naturals, for example, 9397 + ... + 9575.

It is an arithmetic number, because the mean of its divisors is an integer number (84240).

2^1697994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1697994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2021760).

1697994 is an abundant number, since it is smaller than the sum of its proper divisors (2345526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1697994 is a wasteful number, since it uses less digits than its factorization.

1697994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 232 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 1697994 is about 1303.0709880893. The cubic root of 1697994 is about 119.3013570439.

The spelling of 1697994 in words is "one million, six hundred ninety-seven thousand, nine hundred ninety-four".