1704641 has 8 divisors (see below), whose sum is σ = 1817640. Its totient is φ = 1593088.

The previous prime is 1704613. The next prime is 1704671. The reversal of 1704641 is 1464071.

It can be written as a sum of positive squares in 4 ways, for example, as 1254400 + 450241 = 1120^2 + 671^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1704641 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1704601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3095 + ... + 3603.

It is an arithmetic number, because the mean of its divisors is an integer number (227205).

2^1704641 is an apocalyptic number.

It is an amenable number.

1704641 is a deficient number, since it is larger than the sum of its proper divisors (112999).

1704641 is a wasteful number, since it uses less digits than its factorization.

1704641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1704641 is about 1305.6190102783. The cubic root of 1704641 is about 119.4568274805.

The spelling of 1704641 in words is "one million, seven hundred four thousand, six hundred forty-one".