778964 has 12 divisors (see below), whose sum is σ = 1422624. Its totient is φ = 372504.

The previous prime is 778963. The next prime is 778979. The reversal of 778964 is 469877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (778963) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4142 + ... + 4325.

It is an arithmetic number, because the mean of its divisors is an integer number (118552).

2⁷⁷⁸⁹⁶⁴ is an apocalyptic number.

It is an amenable number.

778964 is a deficient number, since it is larger than the sum of its proper divisors (643660).

778964 is a wasteful number, since it uses less digits than its factorization.

778964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8494 (or 8492 counting only the distinct ones).

The product of its digits is 84672, while the sum is 41.

The square root of 778964 is about 882.5893722451. The cubic root of 778964 is about 92.0108682813.

The spelling of 778964 in words is "seven hundred seventy-eight thousand, nine hundred sixty-four".