874821 has 8 divisors (see below), whose sum is σ = 1174240. Its totient is φ = 579312.

The previous prime is 874813. The next prime is 874823. The reversal of 874821 is 128478.

874821 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 874821 - 2³ = 874813 is a prime.

It is a Duffinian number.

874821 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (874823) 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, 406 + ... + 1383.

It is an arithmetic number, because the mean of its divisors is an integer number (146780).

2⁸⁷⁴⁸²¹ is an apocalyptic number.

It is an amenable number.

874821 is a deficient number, since it is larger than the sum of its proper divisors (299419).

874821 is a wasteful number, since it uses less digits than its factorization.

874821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955.

The product of its digits is 3584, while the sum is 30.

The square root of 874821 is about 935.3186622751. The cubic root of 874821 is about 95.6400365094.

The spelling of 874821 in words is "eight hundred seventy-four thousand, eight hundred twenty-one".