1994785 has 8 divisors (see below), whose sum is σ = 2577960. Its totient is φ = 1473024.

The previous prime is 1994779. The next prime is 1994807. The reversal of 1994785 is 5874991.

It can be written as a sum of positive squares in 4 ways, for example, as 414736 + 1580049 = 644^2 + 1257^2 .

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 1994785 - 2³ = 1994777 is a prime.

1994785 is a lucky 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, 15280 + ... + 15409.

It is an arithmetic number, because the mean of its divisors is an integer number (322245).

2^1994785 is an apocalyptic number.

It is an amenable number.

1994785 is a deficient number, since it is larger than the sum of its proper divisors (583175).

1994785 is a wasteful number, since it uses less digits than its factorization.

1994785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30707.

The product of its digits is 90720, while the sum is 43.

The square root of 1994785 is about 1412.3685779569. The cubic root of 1994785 is about 125.8825015326.

The spelling of 1994785 in words is "one million, nine hundred ninety-four thousand, seven hundred eighty-five".