2002805 has 8 divisors (see below), whose sum is σ = 2746752. Its totient is φ = 1373328.

The previous prime is 2002799. The next prime is 2002807. The reversal of 2002805 is 5082002.

2002805 = 222² + 223² + ... + 256².

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2002805 - 2¹⁴ = 1986421 is a prime.

It is a super-2 number, since 2×2002805² = 8022455736050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28577 + ... + 28646.

It is an arithmetic number, because the mean of its divisors is an integer number (343344).

2^2002805 is an apocalyptic number.

It is an amenable number.

2002805 is a deficient number, since it is larger than the sum of its proper divisors (743947).

2002805 is an equidigital number, since it uses as much as digits as its factorization.

2002805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57235.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 2002805 is about 1415.2049321565. The cubic root of 2002805 is about 126.0509787836.

Adding to 2002805 its reverse (5082002), we get a palindrome (7084807).

The spelling of 2002805 in words is "two million, two thousand, eight hundred five".