1604536 has 16 divisors (see below), whose sum is σ = 3029040. Its totient is φ = 796800.

The previous prime is 1604521. The next prime is 1604539. The reversal of 1604536 is 6354061.

It is a self number, because there is not a number n which added to its sum of digits gives 1604536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604539) 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, 736 + ... + 1936.

It is an arithmetic number, because the mean of its divisors is an integer number (189315).

2^1604536 is an apocalyptic number.

It is an amenable number.

1604536 is a deficient number, since it is larger than the sum of its proper divisors (1424504).

1604536 is a wasteful number, since it uses less digits than its factorization.

1604536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374 (or 1370 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1604536 is about 1266.7028065020. The cubic root of 1604536 is about 117.0711331144.

Adding to 1604536 its reverse (6354061), we get a palindrome (7958597).

The spelling of 1604536 in words is "one million, six hundred four thousand, five hundred thirty-six".