780980 has 24 divisors (see below), whose sum is σ = 1737288. Its totient is φ = 293888.

The previous prime is 780973. The next prime is 780991. The reversal of 780980 is 89087.

It can be written as a sum of positive squares in 4 ways, for example, as 150544 + 630436 = 388^2 + 794^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 809 + ... + 1488.

It is an arithmetic number, because the mean of its divisors is an integer number (72387).

2⁷⁸⁰⁹⁸⁰ is an apocalyptic number.

It is an amenable number.

780980 is an abundant number, since it is smaller than the sum of its proper divisors (956308).

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

780980 is a wasteful number, since it uses less digits than its factorization.

780980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323 (or 2321 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 780980 is about 883.7307282199. The cubic root of 780980 is about 92.0901762328.

The spelling of 780980 in words is "seven hundred eighty thousand, nine hundred eighty".