776764 has 12 divisors (see below), whose sum is σ = 1439424. Its totient is φ = 365504.

The previous prime is 776759. The next prime is 776801. The reversal of 776764 is 467677.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5644 + ... + 5779.

It is an arithmetic number, because the mean of its divisors is an integer number (119952).

2⁷⁷⁶⁷⁶⁴ is an apocalyptic number.

It is an amenable number.

776764 is a deficient number, since it is larger than the sum of its proper divisors (662660).

776764 is a wasteful number, since it uses less digits than its factorization.

776764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11444 (or 11442 counting only the distinct ones).

The product of its digits is 49392, while the sum is 37.

The square root of 776764 is about 881.3421583018. The cubic root of 776764 is about 91.9241656112.

It can be divided in two parts, 776 and 764, that added together give a triangular number (1540 = T₅₅).

The spelling of 776764 in words is "seven hundred seventy-six thousand, seven hundred sixty-four".