877220 has 24 divisors (see below), whose sum is σ = 1923264. Its totient is φ = 335456.

The previous prime is 877213. The next prime is 877223. The reversal of 877220 is 22778.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 877220.

It is not an unprimeable number, because it can be changed into a prime (877223) by changing a digit.

877220 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494 + ... + 1413.

It is an arithmetic number, because the mean of its divisors is an integer number (80136).

2⁸⁷⁷²²⁰ is an apocalyptic number.

It is an amenable number.

877220 is an abundant number, since it is smaller than the sum of its proper divisors (1046044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

877220 is a wasteful number, since it uses less digits than its factorization.

877220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939 (or 1937 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 877220 is about 936.6002348921. The cubic root of 877220 is about 95.7273804868.

Adding to 877220 its reverse (22778), we get a palindrome (899998).

The spelling of 877220 in words is "eight hundred seventy-seven thousand, two hundred twenty".