771040 has 48 divisors (see below), whose sum is σ = 1874880. Its totient is φ = 299520.

The previous prime is 771037. The next prime is 771047. The reversal of 771040 is 40177.

771040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 770999 and 771017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (771047) 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, 9721 + ... + 9799.

It is an arithmetic number, because the mean of its divisors is an integer number (39060).

2⁷⁷¹⁰⁴⁰ 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 771040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (937440).

771040 is an abundant number, since it is smaller than the sum of its proper divisors (1103840).

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

771040 is a wasteful number, since it uses less digits than its factorization.

771040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 771040 is about 878.0888337748. The cubic root of 771040 is about 91.6978112720.

It can be divided in two parts, 7710 and 40, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 771040 in words is "seven hundred seventy-one thousand, forty", and thus it is an iban number.