778064 has 20 divisors (see below), whose sum is σ = 1723104. Its totient is φ = 333408.

The previous prime is 778061. The next prime is 778079. The reversal of 778064 is 460877.

It is a self number, because there is not a number n which added to its sum of digits gives 778064.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (778061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3362 + ... + 3585.

2⁷⁷⁸⁰⁶⁴ is an apocalyptic number.

It is an amenable number.

778064 is an abundant number, since it is smaller than the sum of its proper divisors (945040).

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

778064 is a wasteful number, since it uses less digits than its factorization.

778064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6962 (or 6956 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 778064 is about 882.0793615089. The cubic root of 778064 is about 91.9754187636.

The spelling of 778064 in words is "seven hundred seventy-eight thousand, sixty-four".