810147 has 8 divisors (see below), whose sum is σ = 1163344. Its totient is φ = 498528.

The previous prime is 810137. The next prime is 810149. The reversal of 810147 is 741018.

810147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 810147 - 2⁸ = 809891 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (810149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10348 + ... + 10425.

It is an arithmetic number, because the mean of its divisors is an integer number (145418).

2⁸¹⁰¹⁴⁷ is an apocalyptic number.

810147 is a deficient number, since it is larger than the sum of its proper divisors (353197).

810147 is a wasteful number, since it uses less digits than its factorization.

810147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20789.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 810147 is about 900.0816629618. The cubic root of 810147 is about 93.2226138891. Note that the first 3 decimals are identical.

The spelling of 810147 in words is "eight hundred ten thousand, one hundred forty-seven".