776380 has 24 divisors (see below), whose sum is σ = 1779120. Its totient is φ = 282240.

The previous prime is 776357. The next prime is 776389. The reversal of 776380 is 83677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (776389) by changing a digit.

776380 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 7 ways as a sum of consecutive naturals, for example, 1545 + ... + 1984.

It is an arithmetic number, because the mean of its divisors is an integer number (74130).

2⁷⁷⁶³⁸⁰ is an apocalyptic number.

It is an amenable number.

776380 is an abundant number, since it is smaller than the sum of its proper divisors (1002740).

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

776380 is a wasteful number, since it uses less digits than its factorization.

776380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3549 (or 3547 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 776380 is about 881.1242818127. The cubic root of 776380 is about 91.9090152790.

It can be divided in two parts, 776 and 380, that added together give a square (1156 = 34²).

The spelling of 776380 in words is "seven hundred seventy-six thousand, three hundred eighty".