780620 has 24 divisors (see below), whose sum is σ = 1711584. Its totient is φ = 298496.

The previous prime is 780613. The next prime is 780631. The reversal of 780620 is 26087.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389 + ... + 1308.

It is an arithmetic number, because the mean of its divisors is an integer number (71316).

2⁷⁸⁰⁶²⁰ is an apocalyptic number.

It is an amenable number.

780620 is an abundant number, since it is smaller than the sum of its proper divisors (930964).

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

780620 is a wasteful number, since it uses less digits than its factorization.

780620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729 (or 1727 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 780620 is about 883.5270227899. The cubic root of 780620 is about 92.0760241168.

The spelling of 780620 in words is "seven hundred eighty thousand, six hundred twenty".