770920 has 16 divisors (see below), whose sum is σ = 1734660. Its totient is φ = 308352.

The previous prime is 770909. The next prime is 770927. The reversal of 770920 is 29077.

770920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 770884 + 36 = 878^2 + 6^2 .

It is not an unprimeable number, because it can be changed into a prime (770927) by changing a digit.

770920 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 3 ways as a sum of consecutive naturals, for example, 9597 + ... + 9676.

2⁷⁷⁰⁹²⁰ is an apocalyptic number.

It is an amenable number.

770920 is an abundant number, since it is smaller than the sum of its proper divisors (963740).

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

770920 is a wasteful number, since it uses less digits than its factorization.

770920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19284 (or 19280 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 25.

The square root of 770920 is about 878.0205008996. The cubic root of 770920 is about 91.6930539277.

Adding to 770920 its reverse (29077), we get a palindrome (799997).

The spelling of 770920 in words is "seven hundred seventy thousand, nine hundred twenty".