779868 has 60 divisors (see below), whose sum is σ = 2134440. Its totient is φ = 247968.

The previous prime is 779837. The next prime is 779869. The reversal of 779868 is 868977.

It is a super-3 number, since 3×779868³ = 1422933343109580096, which contains 333 as substring.

Its product of digits (169344) is a multiple of the sum of its prime factors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (779869) by changing a digit.

779868 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 19 ways as a sum of consecutive naturals, for example, 9355 + ... + 9437.

It is an arithmetic number, because the mean of its divisors is an integer number (35574).

2⁷⁷⁹⁸⁶⁸ 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 779868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1067220).

779868 is an abundant number, since it is smaller than the sum of its proper divisors (1354572).

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

779868 is a wasteful number, since it uses less digits than its factorization.

779868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 117 counting only the distinct ones).

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

The square root of 779868 is about 883.1013531866. The cubic root of 779868 is about 92.0464478756.

The spelling of 779868 in words is "seven hundred seventy-nine thousand, eight hundred sixty-eight".