674840 has 16 divisors (see below), whose sum is σ = 1518480. Its totient is φ = 269920.

The previous prime is 674837. The next prime is 674851. The reversal of 674840 is 48476.

It is a congruent number.

It is an unprimeable 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, 8396 + ... + 8475.

It is an arithmetic number, because the mean of its divisors is an integer number (94905).

2⁶⁷⁴⁸⁴⁰ is an apocalyptic number.

It is an amenable number.

674840 is an abundant number, since it is smaller than the sum of its proper divisors (843640).

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

674840 is a wasteful number, since it uses less digits than its factorization.

674840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16882 (or 16878 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 674840 is about 821.4864575877. The cubic root of 674840 is about 87.7136005937.

The spelling of 674840 in words is "six hundred seventy-four thousand, eight hundred forty".