775580 has 48 divisors (see below), whose sum is σ = 1858080. Its totient is φ = 269568.

The previous prime is 775573. The next prime is 775601. The reversal of 775580 is 85577.

It is a congruent number.

It is an unprimeable number.

775580 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 15 ways as a sum of consecutive naturals, for example, 4862 + ... + 5018.

It is an arithmetic number, because the mean of its divisors is an integer number (38710).

2⁷⁷⁵⁵⁸⁰ 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 775580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (929040).

775580 is an abundant number, since it is smaller than the sum of its proper divisors (1082500).

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

775580 is a wasteful number, since it uses less digits than its factorization.

775580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 32.

The square root of 775580 is about 880.6701993368. The cubic root of 775580 is about 91.8774360346.

The spelling of 775580 in words is "seven hundred seventy-five thousand, five hundred eighty".