771912 has 48 divisors (see below), whose sum is σ = 2134080. Its totient is φ = 252000.

The previous prime is 771899. The next prime is 771917. The reversal of 771912 is 219177.

771912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (771917) by changing a digit.

771912 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 11 ways as a sum of consecutive naturals, for example, 5037 + ... + 5187.

It is an arithmetic number, because the mean of its divisors is an integer number (44460).

2⁷⁷¹⁹¹² is an apocalyptic number.

771912 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 771912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1067040).

771912 is an abundant number, since it is smaller than the sum of its proper divisors (1362168).

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

771912 is a wasteful number, since it uses less digits than its factorization.

771912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 227 counting only the distinct ones).

The product of its digits is 882, while the sum is 27.

The square root of 771912 is about 878.5852263725. The cubic root of 771912 is about 91.7323664905.

The spelling of 771912 in words is "seven hundred seventy-one thousand, nine hundred twelve".