778196 has 12 divisors (see below), whose sum is σ = 1368948. Its totient is φ = 387072.

The previous prime is 778187. The next prime is 778201. The reversal of 778196 is 691877.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 662596 + 115600 = 814^2 + 340^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 778196.

It is an unprimeable number.

778196 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650 + ... + 1406.

It is an arithmetic number, because the mean of its divisors is an integer number (114079).

2⁷⁷⁸¹⁹⁶ is an apocalyptic number.

It is an amenable number.

778196 is a deficient number, since it is larger than the sum of its proper divisors (590752).

778196 is a wasteful number, since it uses less digits than its factorization.

778196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018 (or 1016 counting only the distinct ones).

The product of its digits is 21168, while the sum is 38.

The square root of 778196 is about 882.1541815352. The cubic root of 778196 is about 91.9806197363.

The spelling of 778196 in words is "seven hundred seventy-eight thousand, one hundred ninety-six".