776864 has 24 divisors (see below), whose sum is σ = 1669248. Its totient is φ = 352960.

The previous prime is 776861. The next prime is 776869. The reversal of 776864 is 468677.

776864 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 (776861) 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, 752 + ... + 1455.

It is an arithmetic number, because the mean of its divisors is an integer number (69552).

2⁷⁷⁶⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

776864 is an abundant number, since it is smaller than the sum of its proper divisors (892384).

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

776864 is a wasteful number, since it uses less digits than its factorization.

776864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228 (or 2220 counting only the distinct ones).

The product of its digits is 56448, while the sum is 38.

The square root of 776864 is about 881.3988881318. The cubic root of 776864 is about 91.9281101908.

The spelling of 776864 in words is "seven hundred seventy-six thousand, eight hundred sixty-four".