1604047 has 8 divisors (see below), whose sum is σ = 1652400. Its totient is φ = 1556544.

The previous prime is 1604021. The next prime is 1604051. The reversal of 1604047 is 7404061.

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

It is not a de Polignac number, because 1604047 - 2⁷ = 1603919 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5829 + ... + 6097.

It is an arithmetic number, because the mean of its divisors is an integer number (206550).

2^1604047 is an apocalyptic number.

1604047 is a deficient number, since it is larger than the sum of its proper divisors (48353).

1604047 is an equidigital number, since it uses as much as digits as its factorization.

1604047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 1604047 is about 1266.5097709848. The cubic root of 1604047 is about 117.0592390007.

The spelling of 1604047 in words is "one million, six hundred four thousand, forty-seven".