674399 has 8 divisors (see below), whose sum is σ = 756048. Its totient is φ = 596160.

The previous prime is 674393. The next prime is 674419. The reversal of 674399 is 993476.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 674399 - 2¹² = 670303 is a prime.

It is a super-2 number, since 2×674399² = 909628022402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422 + ... + 1235.

It is an arithmetic number, because the mean of its divisors is an integer number (94506).

2⁶⁷⁴³⁹⁹ is an apocalyptic number.

674399 is a deficient number, since it is larger than the sum of its proper divisors (81649).

674399 is a wasteful number, since it uses less digits than its factorization.

674399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705.

The product of its digits is 40824, while the sum is 38.

The square root of 674399 is about 821.2179978544. The cubic root of 674399 is about 87.6944898282.

The spelling of 674399 in words is "six hundred seventy-four thousand, three hundred ninety-nine".