776320 has 32 divisors (see below), whose sum is σ = 1857420. Its totient is φ = 310272.

The previous prime is 776317. The next prime is 776327. The reversal of 776320 is 23677.

It can be written as a sum of positive squares in 2 ways, for example, as 678976 + 97344 = 824^2 + 312^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (776327) 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, 34 + ... + 1246.

2⁷⁷⁶³²⁰ 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 776320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (928710).

776320 is an abundant number, since it is smaller than the sum of its proper divisors (1081100).

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

776320 is a wasteful number, since it uses less digits than its factorization.

776320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232 (or 1220 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 776320 is about 881.0902337445. The cubic root of 776320 is about 91.9066475884.

Adding to 776320 its reverse (23677), we get a palindrome (799997).

The spelling of 776320 in words is "seven hundred seventy-six thousand, three hundred twenty".