778412 has 12 divisors (see below), whose sum is σ = 1421616. Its totient is φ = 372240.

The previous prime is 778409. The next prime is 778417. The reversal of 778412 is 214877.

778412 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 (778417) 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, 4139 + ... + 4322.

It is an arithmetic number, because the mean of its divisors is an integer number (118468).

2⁷⁷⁸⁴¹² is an apocalyptic number.

It is an amenable number.

778412 is a deficient number, since it is larger than the sum of its proper divisors (643204).

778412 is a wasteful number, since it uses less digits than its factorization.

778412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8488 (or 8486 counting only the distinct ones).

The product of its digits is 3136, while the sum is 29.

The square root of 778412 is about 882.2766006191. The cubic root of 778412 is about 91.9891291503.

The spelling of 778412 in words is "seven hundred seventy-eight thousand, four hundred twelve".