860780 has 24 divisors (see below), whose sum is σ = 1825152. Its totient is φ = 340992.

The previous prime is 860779. The next prime is 860789. The reversal of 860780 is 87068.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (860789) 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, 3749 + ... + 3971.

It is an arithmetic number, because the mean of its divisors is an integer number (76048).

2⁸⁶⁰⁷⁸⁰ is an apocalyptic number.

It is an amenable number.

860780 is an abundant number, since it is smaller than the sum of its proper divisors (964372).

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

860780 is a wasteful number, since it uses less digits than its factorization.

860780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 860780 is about 927.7823020515. The cubic root of 860780 is about 95.1255956547.

The spelling of 860780 in words is "eight hundred sixty thousand, seven hundred eighty".