667591201 has 8 divisors (see below), whose sum is σ = 703656800. Its totient is φ = 631618560.

The previous prime is 667591181. The next prime is 667591217. The reversal of 667591201 is 102195766.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667591201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667591501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8235 + ... + 37456.

It is an arithmetic number, because the mean of its divisors is an integer number (87957100).

Almost surely, 2^667591201 is an apocalyptic number.

It is an amenable number.

667591201 is a deficient number, since it is larger than the sum of its proper divisors (36065599).

667591201 is a wasteful number, since it uses less digits than its factorization.

667591201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46479.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 667591201 is about 25837.7863022357. The cubic root of 667591201 is about 873.9841057701.

The spelling of 667591201 in words is "six hundred sixty-seven million, five hundred ninety-one thousand, two hundred one".