1604964 has 24 divisors (see below), whose sum is σ = 3794560. Its totient is φ = 527904.

The previous prime is 1604957. The next prime is 1604983. The reversal of 1604964 is 4694061.

It is a nialpdrome in base 6.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102 + ... + 1794.

2^1604964 is an apocalyptic number.

It is an amenable number.

1604964 is an abundant number, since it is smaller than the sum of its proper divisors (2189596).

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

1604964 is a wasteful number, since it uses less digits than its factorization.

1604964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779 (or 1777 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1604964 is about 1266.8717377856. The cubic root of 1604964 is about 117.0815415212.

The spelling of 1604964 in words is "one million, six hundred four thousand, nine hundred sixty-four".