879780 has 96 divisors (see below), whose sum is σ = 2838528. Its totient is φ = 201600.

The previous prime is 879743. The next prime is 879797. The reversal of 879780 is 87978.

879780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

879780 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 31 ways as a sum of consecutive naturals, for example, 20439 + ... + 20481.

It is an arithmetic number, because the mean of its divisors is an integer number (29568).

2⁸⁷⁹⁷⁸⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 879780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1419264).

879780 is an abundant number, since it is smaller than the sum of its proper divisors (1958748).

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

879780 is a wasteful number, since it uses less digits than its factorization.

879780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 39.

The square root of 879780 is about 937.9658842410. The cubic root of 879780 is about 95.8204107759.

It can be divided in two parts, 87 and 9780, that multiplied together give a triangular number (850860 = T₁₃₀₄).

The spelling of 879780 in words is "eight hundred seventy-nine thousand, seven hundred eighty".