667404343 has 8 divisors (see below), whose sum is σ = 707323968. Its totient is φ = 627558144.

The previous prime is 667404341. The next prime is 667404349. The reversal of 667404343 is 343404766.

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

It is a cyclic number.

It is not a de Polignac number, because 667404343 - 2¹ = 667404341 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 (667404341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 955 + ... + 36547.

It is an arithmetic number, because the mean of its divisors is an integer number (88415496).

Almost surely, 2^667404343 is an apocalyptic number.

667404343 is a deficient number, since it is larger than the sum of its proper divisors (39919625).

667404343 is a wasteful number, since it uses less digits than its factorization.

667404343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36713.

The product of its (nonzero) digits is 145152, while the sum is 37.

The square root of 667404343 is about 25834.1700660192. The cubic root of 667404343 is about 873.9025557831.

The spelling of 667404343 in words is "six hundred sixty-seven million, four hundred four thousand, three hundred forty-three".