801815 has 16 divisors (see below), whose sum is σ = 1136640. Its totient is φ = 531360.

The previous prime is 801811. The next prime is 801817. The reversal of 801815 is 518108.

801815 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 801815 - 2² = 801811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801811) 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, 716 + ... + 1454.

It is an arithmetic number, because the mean of its divisors is an integer number (71040).

2⁸⁰¹⁸¹⁵ is an apocalyptic number.

801815 is a deficient number, since it is larger than the sum of its proper divisors (334825).

801815 is a wasteful number, since it uses less digits than its factorization.

801815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782.

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 801815 is about 895.4412320192. The cubic root of 801815 is about 92.9019276784.

The spelling of 801815 in words is "eight hundred one thousand, eight hundred fifteen".