1602005 has 4 divisors (see below), whose sum is σ = 1922412. Its totient is φ = 1281600.

The previous prime is 1601969. The next prime is 1602011. The reversal of 1602005 is 5002061.

1602005 = T₇₉₈ + T₇₉₉ + ... + T₈₀₂.

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

It can be written as a sum of positive squares in 2 ways, for example, as 223729 + 1378276 = 473^2 + 1174^2 .

It is not a de Polignac number, because 1602005 - 2⁸ = 1601749 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 in 3 ways as a sum of consecutive naturals, for example, 160196 + ... + 160205.

It is an arithmetic number, because the mean of its divisors is an integer number (480603).

2^1602005 is an apocalyptic number.

It is an amenable number.

1602005 is a deficient number, since it is larger than the sum of its proper divisors (320407).

1602005 is an equidigital number, since it uses as much as digits as its factorization.

1602005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320406.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 1602005 is about 1265.7033617716. The cubic root of 1602005 is about 117.0095445984.

Adding to 1602005 its reverse (5002061), we get a palindrome (6604066).

The spelling of 1602005 in words is "one million, six hundred two thousand, five".