667344441 has 8 divisors (see below), whose sum is σ = 891969760. Its totient is φ = 443807712.

The previous prime is 667344437. The next prime is 667344443. The reversal of 667344441 is 144443766.

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

It is not a de Polignac number, because 667344441 - 2² = 667344437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 667344441.

It is not an unprimeable number, because it can be changed into a prime (667344443) 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, 270715 + ... + 273168.

It is an arithmetic number, because the mean of its divisors is an integer number (111496220).

Almost surely, 2^667344441 is an apocalyptic number.

It is an amenable number.

667344441 is a deficient number, since it is larger than the sum of its proper divisors (224625319).

667344441 is a wasteful number, since it uses less digits than its factorization.

667344441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544295.

The product of its digits is 193536, while the sum is 39.

The square root of 667344441 is about 25833.0106840066. The cubic root of 667344441 is about 873.8764096756.

The spelling of 667344441 in words is "six hundred sixty-seven million, three hundred forty-four thousand, four hundred forty-one".