803645 has 8 divisors (see below), whose sum is σ = 974904. Its totient is φ = 635904.

The previous prime is 803629. The next prime is 803651. The reversal of 803645 is 546308.

803645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 32761 + 770884 = 181^2 + 878^2 .

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 803645 - 2⁴ = 803629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 803645.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344 + ... + 1313.

It is an arithmetic number, because the mean of its divisors is an integer number (121863).

2⁸⁰³⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

803645 is a deficient number, since it is larger than the sum of its proper divisors (171259).

803645 is a wasteful number, since it uses less digits than its factorization.

803645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 803645 is about 896.4624922438. The cubic root of 803645 is about 92.9725513475.

It can be divided in two parts, 80 and 3645, that multiplied together give a square (291600 = 540²).

The spelling of 803645 in words is "eight hundred three thousand, six hundred forty-five".