667743 has 8 divisors (see below), whose sum is σ = 942768. Its totient is φ = 418944.

The previous prime is 667741. The next prime is 667753. The reversal of 667743 is 347766.

667743 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 667743 - 2¹ = 667741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6496 + ... + 6597.

It is an arithmetic number, because the mean of its divisors is an integer number (117846).

2⁶⁶⁷⁷⁴³ is an apocalyptic number.

667743 is a deficient number, since it is larger than the sum of its proper divisors (275025).

667743 is a wasteful number, since it uses less digits than its factorization.

667743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13113.

The product of its digits is 21168, while the sum is 33.

The square root of 667743 is about 817.1554319712. The cubic root of 667743 is about 87.4050343840.

The spelling of 667743 in words is "six hundred sixty-seven thousand, seven hundred forty-three".