667004011 has 4 divisors (see below), whose sum is σ = 667359000. Its totient is φ = 666649024.

The previous prime is 667003969. The next prime is 667004017. The reversal of 667004011 is 110400766.

It is a happy number.

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 667004011 - 2⁹ = 667003499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667004017) 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, 174661 + ... + 178438.

It is an arithmetic number, because the mean of its divisors is an integer number (166839750).

Almost surely, 2^667004011 is an apocalyptic number.

667004011 is a deficient number, since it is larger than the sum of its proper divisors (354989).

667004011 is a wasteful number, since it uses less digits than its factorization.

667004011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354988.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 667004011 is about 25826.4207934433. The cubic root of 667004011 is about 873.7277885994.

Adding to 667004011 its reverse (110400766), we get a palindrome (777404777).

The spelling of 667004011 in words is "six hundred sixty-seven million, four thousand, eleven".