780672 has 64 divisors (see below), whose sum is σ = 2203200. Its totient is φ = 244224.

The previous prime is 780671. The next prime is 780679. The reversal of 780672 is 276087.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780671) 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, 7243 + ... + 7349.

It is an arithmetic number, because the mean of its divisors is an integer number (34425).

2⁷⁸⁰⁶⁷² 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 780672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1101600).

780672 is an abundant number, since it is smaller than the sum of its proper divisors (1422528).

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

780672 is a wasteful number, since it uses less digits than its factorization.

780672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 780672 is about 883.5564498095. The cubic root of 780672 is about 92.0780685801.

The spelling of 780672 in words is "seven hundred eighty thousand, six hundred seventy-two".