780676768 has 24 divisors (see below), whose sum is σ = 1569661632. Its totient is φ = 382032576.

The previous prime is 780676717. The next prime is 780676829. The reversal of 780676768 is 867676087.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258030 + ... + 261037.

It is an arithmetic number, because the mean of its divisors is an integer number (65402568).

Almost surely, 2^780676768 is an apocalyptic number.

It is an amenable number.

780676768 is an abundant number, since it is smaller than the sum of its proper divisors (788984864).

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

780676768 is a wasteful number, since it uses less digits than its factorization.

780676768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519124 (or 519116 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 55.

The square root of 780676768 is about 27940.5935513188. The cubic root of 780676768 is about 920.7825603713.

The spelling of 780676768 in words is "seven hundred eighty million, six hundred seventy-six thousand, seven hundred sixty-eight".