778896 has 50 divisors (see below), whose sum is σ = 2258102. Its totient is φ = 259200.

The previous prime is 778879. The next prime is 778903. The reversal of 778896 is 698877.

It can be written as a sum of positive squares in only one way, i.e., 746496 + 32400 = 864^2 + 180^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 996 + ... + 1596.

2⁷⁷⁸⁸⁹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 778896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1129051).

778896 is an abundant number, since it is smaller than the sum of its proper divisors (1479206).

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

778896 is a wasteful number, since it uses less digits than its factorization.

778896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621 (or 606 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 778896 is about 882.5508483935. The cubic root of 778896 is about 92.0081908271.

The spelling of 778896 in words is "seven hundred seventy-eight thousand, eight hundred ninety-six".