1604992 has 16 divisors (see below), whose sum is σ = 3197700. Its totient is φ = 802432.

The previous prime is 1604983. The next prime is 1605001. The reversal of 1604992 is 2994061.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1604983) and next prime (1605001).

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6142 + ... + 6397.

2^1604992 is an apocalyptic number.

It is an amenable number.

1604992 is a deficient number, since it is larger than the sum of its proper divisors (1592708).

1604992 is an equidigital number, since it uses as much as digits as its factorization.

1604992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12553 (or 12541 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 1604992 is about 1266.8827885799. The cubic root of 1604992 is about 117.0822223805.

The spelling of 1604992 in words is "one million, six hundred four thousand, nine hundred ninety-two".