674320 has 20 divisors (see below), whose sum is σ = 1567980. Its totient is φ = 269696.

The previous prime is 674299. The next prime is 674321. The reversal of 674320 is 23476.

It can be written as a sum of positive squares in 2 ways, for example, as 173056 + 501264 = 416^2 + 708^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 674291 and 674300.

It is not an unprimeable number, because it can be changed into a prime (674321) 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, 4135 + ... + 4294.

It is an arithmetic number, because the mean of its divisors is an integer number (78399).

2⁶⁷⁴³²⁰ is an apocalyptic number.

It is an amenable number.

674320 is an abundant number, since it is smaller than the sum of its proper divisors (893660).

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

674320 is a wasteful number, since it uses less digits than its factorization.

674320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8442 (or 8436 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 674320 is about 821.1698971589. The cubic root of 674320 is about 87.6910654779.

Adding to 674320 its reverse (23476), we get a palindrome (697796).

The spelling of 674320 in words is "six hundred seventy-four thousand, three hundred twenty".