801945 has 24 divisors (see below), whose sum is σ = 1415232. Its totient is φ = 420000.

The previous prime is 801883. The next prime is 801947. The reversal of 801945 is 549108.

801945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 801945 - 2⁷ = 801817 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801947) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3070 + ... + 3320.

It is an arithmetic number, because the mean of its divisors is an integer number (58968).

2⁸⁰¹⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

801945 is a deficient number, since it is larger than the sum of its proper divisors (613287).

801945 is a wasteful number, since it uses less digits than its factorization.

801945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 801945 is about 895.5138189889. The cubic root of 801945 is about 92.9069482039.

It can be divided in two parts, 80 and 1945, that added together give a square (2025 = 45²).

The spelling of 801945 in words is "eight hundred one thousand, nine hundred forty-five".