877720 has 16 divisors (see below), whose sum is σ = 1974960. Its totient is φ = 351072.

The previous prime is 877699. The next prime is 877739. The reversal of 877720 is 27778.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10932 + ... + 11011.

It is an arithmetic number, because the mean of its divisors is an integer number (123435).

2⁸⁷⁷⁷²⁰ is an apocalyptic number.

It is an amenable number.

877720 is an abundant number, since it is smaller than the sum of its proper divisors (1097240).

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

877720 is a wasteful number, since it uses less digits than its factorization.

877720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21954 (or 21950 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 31.

The square root of 877720 is about 936.8671197134. The cubic root of 877720 is about 95.7455646744.

The spelling of 877720 in words is "eight hundred seventy-seven thousand, seven hundred twenty".