674390 has 16 divisors (see below), whose sum is σ = 1285632. Its totient is φ = 253824.

The previous prime is 674371. The next prime is 674393. The reversal of 674390 is 93476.

It is a plaindrome in base 14.

It is a congruent number.

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

674390 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1814 + ... + 2153.

It is an arithmetic number, because the mean of its divisors is an integer number (80352).

2⁶⁷⁴³⁹⁰ is an apocalyptic number.

674390 is a deficient number, since it is larger than the sum of its proper divisors (611242).

674390 is a wasteful number, since it uses less digits than its factorization.

674390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3991.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 674390 is about 821.2125181705. The cubic root of 674390 is about 87.6940997258.

The spelling of 674390 in words is "six hundred seventy-four thousand, three hundred ninety".