780607772 has 48 divisors (see below), whose sum is σ = 1603058688. Its totient is φ = 325657920.

The previous prime is 780607771. The next prime is 780607777. The reversal of 780607772 is 277706087.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780607771) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 257747 + ... + 260757.

It is an arithmetic number, because the mean of its divisors is an integer number (33397056).

Almost surely, 2^780607772 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 780607772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (801529344).

780607772 is an abundant number, since it is smaller than the sum of its proper divisors (822450916).

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

780607772 is a wasteful number, since it uses less digits than its factorization.

780607772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3266 (or 3264 counting only the distinct ones).

The product of its (nonzero) digits is 230496, while the sum is 44.

The square root of 780607772 is about 27939.3588330155. The cubic root of 780607772 is about 920.7554334015.

The spelling of 780607772 in words is "seven hundred eighty million, six hundred seven thousand, seven hundred seventy-two".