1605046 has 4 divisors (see below), whose sum is σ = 2407572. Its totient is φ = 802522.

The previous prime is 1605041. The next prime is 1605047. The reversal of 1605046 is 6405061.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1605041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401260 + ... + 401263.

It is an arithmetic number, because the mean of its divisors is an integer number (601893).

2^1605046 is an apocalyptic number.

1605046 is a deficient number, since it is larger than the sum of its proper divisors (802526).

1605046 is an equidigital number, since it uses as much as digits as its factorization.

1605046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802525.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1605046 is about 1266.9041005538. The cubic root of 1605046 is about 117.0835354440.

The spelling of 1605046 in words is "one million, six hundred five thousand, forty-six".