777040 has 40 divisors (see below), whose sum is σ = 1973088. Its totient is φ = 282240.

The previous prime is 777031. The next prime is 777041. The reversal of 777040 is 40777.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 776996 and 777014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (777041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439 + ... + 1321.

2⁷⁷⁷⁰⁴⁰ 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 777040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (986544).

777040 is an abundant number, since it is smaller than the sum of its proper divisors (1196048).

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

777040 is a wasteful number, since it uses less digits than its factorization.

777040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907 (or 901 counting only the distinct ones).

The product of its (nonzero) digits is 1372, while the sum is 25.

The square root of 777040 is about 881.4987237654. The cubic root of 777040 is about 91.9350518286.

It can be divided in two parts, 77 and 7040, that added together give a palindrome (7117).

The spelling of 777040 in words is "seven hundred seventy-seven thousand, forty", and thus it is an iban number.