804545 has 16 divisors (see below), whose sum is σ = 1118208. Its totient is φ = 544320.

The previous prime is 804541. The next prime is 804553. The reversal of 804545 is 545408.

It is not a de Polignac number, because 804545 - 2² = 804541 is a prime.

804545 is a modest number, since divided by 4545 gives 80 as remainder.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4355 + ... + 4535.

It is an arithmetic number, because the mean of its divisors is an integer number (69888).

2⁸⁰⁴⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

804545 is a deficient number, since it is larger than the sum of its proper divisors (313663).

804545 is a wasteful number, since it uses less digits than its factorization.

804545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 804545 is about 896.9643248201. The cubic root of 804545 is about 93.0072449746.

The spelling of 804545 in words is "eight hundred four thousand, five hundred forty-five".