1604364 has 12 divisors (see below), whose sum is σ = 3743544. Its totient is φ = 534784.

The previous prime is 1604359. The next prime is 1604381. The reversal of 1604364 is 4634061.

It is a tau number, because it is divible by the number of its divisors (12).

It is a d-powerful number, because it can be written as 1 + 6³ + 0 + 4⁵ + 3¹³ + 6⁵ + 4⁵ .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66837 + ... + 66860.

It is an arithmetic number, because the mean of its divisors is an integer number (311962).

2^1604364 is an apocalyptic number.

It is an amenable number.

1604364 is an abundant number, since it is smaller than the sum of its proper divisors (2139180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1604364 is a wasteful number, since it uses less digits than its factorization.

1604364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133704 (or 133702 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 1604364 is about 1266.6349118827. The cubic root of 1604364 is about 117.0669497753.

The spelling of 1604364 in words is "one million, six hundred four thousand, three hundred sixty-four".