667330547 has 4 divisors (see below), whose sum is σ = 718663680. Its totient is φ = 615997416.

The previous prime is 667330537. The next prime is 667330549. The reversal of 667330547 is 745033766.

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 667330547 - 2¹⁸ = 667068403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667330549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25666547 + ... + 25666572.

It is an arithmetic number, because the mean of its divisors is an integer number (179665920).

Almost surely, 2^667330547 is an apocalyptic number.

667330547 is a deficient number, since it is larger than the sum of its proper divisors (51333133).

667330547 is a wasteful number, since it uses less digits than its factorization.

667330547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51333132.

The product of its (nonzero) digits is 317520, while the sum is 41.

The square root of 667330547 is about 25832.7417631191. The cubic root of 667330547 is about 873.8703449797.

The spelling of 667330547 in words is "six hundred sixty-seven million, three hundred thirty thousand, five hundred forty-seven".