770420 has 24 divisors (see below), whose sum is σ = 1849344. Its totient is φ = 264096.

The previous prime is 770417. The next prime is 770437. The reversal of 770420 is 24077.

770420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 770392 and 770401.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 770420.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2612 + ... + 2891.

It is an arithmetic number, because the mean of its divisors is an integer number (77056).

2⁷⁷⁰⁴²⁰ is an apocalyptic number.

770420 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

770420 is an abundant number, since it is smaller than the sum of its proper divisors (1078924).

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

770420 is a wasteful number, since it uses less digits than its factorization.

770420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5519 (or 5517 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 770420 is about 877.7357233245. The cubic root of 770420 is about 91.6732263442.

Adding to 770420 its reverse (24077), we get a palindrome (794497).

The spelling of 770420 in words is "seven hundred seventy thousand, four hundred twenty", and thus it is an iban number.