674646 has 16 divisors (see below), whose sum is σ = 1542144. Its totient is φ = 192744.

The previous prime is 674603. The next prime is 674647. The reversal of 674646 is 646476.

674646 = 119² + 120² + ... + 154².

674646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674647) by changing a digit.

674646 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, 7990 + ... + 8073.

It is an arithmetic number, because the mean of its divisors is an integer number (96384).

2⁶⁷⁴⁶⁴⁶ is an apocalyptic number.

674646 is an abundant number, since it is smaller than the sum of its proper divisors (867498).

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

674646 is a wasteful number, since it uses less digits than its factorization.

674646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16075.

The product of its digits is 24192, while the sum is 33.

The square root of 674646 is about 821.3683704648. The cubic root of 674646 is about 87.7051946163.

The spelling of 674646 in words is "six hundred seventy-four thousand, six hundred forty-six".