1604613 has 16 divisors (see below), whose sum is σ = 2301696. Its totient is φ = 990720.

The previous prime is 1604611. The next prime is 1604621. The reversal of 1604613 is 3164061.

1604613 is nontrivially palindromic in base 9.

It is not a de Polignac number, because 1604613 - 2¹ = 1604611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1604613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3508 + ... + 3938.

It is an arithmetic number, because the mean of its divisors is an integer number (143856).

2^1604613 is an apocalyptic number.

It is an amenable number.

1604613 is a deficient number, since it is larger than the sum of its proper divisors (697083).

1604613 is a wasteful number, since it uses less digits than its factorization.

1604613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1604613 is about 1266.7332000070. The cubic root of 1604613 is about 117.0730057914.

Adding to 1604613 its reverse (3164061), we get a palindrome (4768674).

The spelling of 1604613 in words is "one million, six hundred four thousand, six hundred thirteen".