76780 has 24 divisors (see below), whose sum is σ = 176400. Its totient is φ = 27840.

The previous prime is 76777. The next prime is 76781. The reversal of 76780 is 8767.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46 + ... + 394.

It is an arithmetic number, because the mean of its divisors is an integer number (7350).

2⁷⁶⁷⁸⁰ 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 76780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88200).

76780 is an abundant number, since it is smaller than the sum of its proper divisors (99620).

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

76780 is a wasteful number, since it uses less digits than its factorization.

76780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 76780 is about 277.0920424696. The cubic root of 76780 is about 42.5026526603.

The spelling of 76780 in words is "seventy-six thousand, seven hundred eighty".