770020 has 12 divisors (see below), whose sum is σ = 1617084. Its totient is φ = 308000.

The previous prime is 769999. The next prime is 770027. The reversal of 770020 is 20077.

It can be written as a sum of positive squares in 2 ways, for example, as 438244 + 331776 = 662^2 + 576^2 .

It is a junction number, because it is equal to n+sod(n) for n = 769976 and 770003.

It is not an unprimeable number, because it can be changed into a prime (770027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19231 + ... + 19270.

It is an arithmetic number, because the mean of its divisors is an integer number (134757).

2⁷⁷⁰⁰²⁰ is an apocalyptic number.

It is an amenable number.

770020 is an abundant number, since it is smaller than the sum of its proper divisors (847064).

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

770020 is a wasteful number, since it uses less digits than its factorization.

770020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38510 (or 38508 counting only the distinct ones).

The product of its (nonzero) digits is 98, while the sum is 16.

The square root of 770020 is about 877.5078347229. The cubic root of 770020 is about 91.6573580998.

Adding to 770020 its reverse (20077), we get a palindrome (790097).

The spelling of 770020 in words is "seven hundred seventy thousand, twenty", and thus it is an iban number.