674820 has 72 divisors (see below), whose sum is σ = 2149056. Its totient is φ = 171072.

The previous prime is 674813. The next prime is 674827. The reversal of 674820 is 28476.

It is an interprime number because it is at equal distance from previous prime (674813) and next prime (674827).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 674820.

It is not an unprimeable number, because it can be changed into a prime (674827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4059 + ... + 4221.

It is an arithmetic number, because the mean of its divisors is an integer number (29848).

2⁶⁷⁴⁸²⁰ is an apocalyptic number.

674820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 674820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1074528).

674820 is an abundant number, since it is smaller than the sum of its proper divisors (1474236).

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

674820 is a wasteful number, since it uses less digits than its factorization.

674820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 674820 is about 821.4742844423. The cubic root of 674820 is about 87.7127340725.

The spelling of 674820 in words is "six hundred seventy-four thousand, eight hundred twenty".