1604361 has 16 divisors (see below), whose sum is σ = 2374848. Its totient is φ = 955200.

The previous prime is 1604359. The next prime is 1604381. The reversal of 1604361 is 1634061.

It is not a de Polignac number, because 1604361 - 2¹ = 1604359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604311) 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, 1615 + ... + 2411.

It is an arithmetic number, because the mean of its divisors is an integer number (148428).

2^1604361 is an apocalyptic number.

1604361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1604361 is a deficient number, since it is larger than the sum of its proper divisors (770487).

1604361 is a wasteful number, since it uses less digits than its factorization.

1604361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872.

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

The square root of 1604361 is about 1266.6337276419. The cubic root of 1604361 is about 117.0668768074.

The spelling of 1604361 in words is "one million, six hundred four thousand, three hundred sixty-one".