874221 has 8 divisors (see below), whose sum is σ = 1170624. Its totient is φ = 580320.

The previous prime is 874217. The next prime is 874229. The reversal of 874221 is 122478.

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

It is not a de Polignac number, because 874221 - 2² = 874217 is a prime.

It is an Ulam number.

874221 is a lucky number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 874191 and 874200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (874229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465 + ... + 1401.

It is an arithmetic number, because the mean of its divisors is an integer number (146328).

2⁸⁷⁴²²¹ is an apocalyptic number.

It is an amenable number.

874221 is a deficient number, since it is larger than the sum of its proper divisors (296403).

874221 is a wasteful number, since it uses less digits than its factorization.

874221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251.

The product of its digits is 896, while the sum is 24.

The square root of 874221 is about 934.9978609601. The cubic root of 874221 is about 95.6181664560.

Adding to 874221 its reverse (122478), we get a palindrome (996699).

The spelling of 874221 in words is "eight hundred seventy-four thousand, two hundred twenty-one".