780676978 has 16 divisors (see below), whose sum is σ = 1233303840. Its totient is φ = 369597600.

The previous prime is 780676969. The next prime is 780676979. The reversal of 780676978 is 879676087.

780676978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (780676979) 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, 87358 + ... + 95878.

It is an arithmetic number, because the mean of its divisors is an integer number (77081490).

Almost surely, 2^780676978 is an apocalyptic number.

780676978 is a deficient number, since it is larger than the sum of its proper divisors (452626862).

780676978 is a wasteful number, since it uses less digits than its factorization.

780676978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10953.

The product of its (nonzero) digits is 7112448, while the sum is 58.

The square root of 780676978 is about 27940.5973092917. The cubic root of 780676978 is about 920.7826429340.

The spelling of 780676978 in words is "seven hundred eighty million, six hundred seventy-six thousand, nine hundred seventy-eight".