780540 has 24 divisors (see below), whose sum is σ = 2185680. Its totient is φ = 208128.

The previous prime is 780523. The next prime is 780553. The reversal of 780540 is 45087.

It is a self number, because there is not a number n which added to its sum of digits gives 780540.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6445 + ... + 6564.

It is an arithmetic number, because the mean of its divisors is an integer number (91070).

2⁷⁸⁰⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

780540 is an abundant number, since it is smaller than the sum of its proper divisors (1405140).

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

780540 is a wasteful number, since it uses less digits than its factorization.

780540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13021 (or 13019 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 780540 is about 883.4817485381. The cubic root of 780540 is about 92.0728786112.

The spelling of 780540 in words is "seven hundred eighty thousand, five hundred forty".