674384 has 20 divisors (see below), whose sum is σ = 1321716. Its totient is φ = 333312.

The previous prime is 674371. The next prime is 674393. The reversal of 674384 is 483476.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 144400 + 529984 = 380^2 + 728^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 674384.

It is a congruent number.

It is an unprimeable number.

674384 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1622 + ... + 1994.

2⁶⁷⁴³⁸⁴ is an apocalyptic number.

It is an amenable number.

674384 is a deficient number, since it is larger than the sum of its proper divisors (647332).

674384 is a wasteful number, since it uses less digits than its factorization.

674384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494 (or 488 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 674384 is about 821.2088650276. The cubic root of 674384 is about 87.6938396557.

The spelling of 674384 in words is "six hundred seventy-four thousand, three hundred eighty-four".