1604011 has 4 divisors (see below), whose sum is σ = 1607400. Its totient is φ = 1600624.

The previous prime is 1604003. The next prime is 1604017. The reversal of 1604011 is 1104061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1604011 - 2³ = 1604003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1603982 and 1604000.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 841 + ... + 1978.

It is an arithmetic number, because the mean of its divisors is an integer number (401850).

2^1604011 is an apocalyptic number.

1604011 is a deficient number, since it is larger than the sum of its proper divisors (3389).

1604011 is an equidigital number, since it uses as much as digits as its factorization.

1604011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1604011 is about 1266.4955586183. The cubic root of 1604011 is about 117.0583632649.

Adding to 1604011 its reverse (1104061), we get a palindrome (2708072).

The spelling of 1604011 in words is "one million, six hundred four thousand, eleven".