802045 has 4 divisors (see below), whose sum is σ = 962460. Its totient is φ = 641632.

The previous prime is 802037. The next prime is 802073. The reversal of 802045 is 540208.

It is a happy number.

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 244036 + 558009 = 494^2 + 747^2 .

It is a cyclic number.

It is not a de Polignac number, because 802045 - 2³ = 802037 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 80200 + ... + 80209.

It is an arithmetic number, because the mean of its divisors is an integer number (240615).

2⁸⁰²⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

802045 is a deficient number, since it is larger than the sum of its proper divisors (160415).

802045 is a wasteful number, since it uses less digits than its factorization.

802045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160414.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 802045 is about 895.5696511160. The cubic root of 802045 is about 92.9108097774.

The spelling of 802045 in words is "eight hundred two thousand, forty-five".