674287 has 4 divisors (see below), whose sum is σ = 683856. Its totient is φ = 664720.

The previous prime is 674273. The next prime is 674299. The reversal of 674287 is 782476.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 674287 - 2⁷ = 674159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4678 + ... + 4819.

It is an arithmetic number, because the mean of its divisors is an integer number (170964).

2⁶⁷⁴²⁸⁷ is an apocalyptic number.

674287 is a deficient number, since it is larger than the sum of its proper divisors (9569).

674287 is an equidigital number, since it uses as much as digits as its factorization.

674287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9568.

The product of its digits is 18816, while the sum is 34.

The square root of 674287 is about 821.1498036290. The cubic root of 674287 is about 87.6896349739.

It can be divided in two parts, 674 and 287, that added together give a square (961 = 31²).

The spelling of 674287 in words is "six hundred seventy-four thousand, two hundred eighty-seven".