774220 has 12 divisors (see below), whose sum is σ = 1625904. Its totient is φ = 309680.

The previous prime is 774217. The next prime is 774223. The reversal of 774220 is 22477.

It is an interprime number because it is at equal distance from previous prime (774217) and next prime (774223).

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 774191 and 774200.

It is not an unprimeable number, because it can be changed into a prime (774223) 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, 19336 + ... + 19375.

It is an arithmetic number, because the mean of its divisors is an integer number (135492).

2⁷⁷⁴²²⁰ is an apocalyptic number.

It is an amenable number.

774220 is an abundant number, since it is smaller than the sum of its proper divisors (851684).

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

774220 is a wasteful number, since it uses less digits than its factorization.

774220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38720 (or 38718 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 774220 is about 879.8977213290. The cubic root of 774220 is about 91.8237014443.

Adding to 774220 its reverse (22477), we get a palindrome (796697).

The spelling of 774220 in words is "seven hundred seventy-four thousand, two hundred twenty", and thus it is an iban number.