1604366 has 4 divisors (see below), whose sum is σ = 2406552. Its totient is φ = 802182.

The previous prime is 1604359. The next prime is 1604381. The reversal of 1604366 is 6634061.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 401090 + ... + 401093.

It is an arithmetic number, because the mean of its divisors is an integer number (601638).

2^1604366 is an apocalyptic number.

1604366 is a deficient number, since it is larger than the sum of its proper divisors (802186).

1604366 is an equidigital number, since it uses as much as digits as its factorization.

1604366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802185.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 1604366 is about 1266.6357013759. The cubic root of 1604366 is about 117.0669984205.

The spelling of 1604366 in words is "one million, six hundred four thousand, three hundred sixty-six".