664072107 has 8 divisors (see below), whose sum is σ = 888797184. Its totient is φ = 441030888.

The previous prime is 664072093. The next prime is 664072109. The reversal of 664072107 is 701270466.

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

It is not a de Polignac number, because 664072107 - 2⁶ = 664072043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (664072109) 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 7 ways as a sum of consecutive naturals, for example, 420043 + ... + 421620.

It is an arithmetic number, because the mean of its divisors is an integer number (111099648).

Almost surely, 2^664072107 is an apocalyptic number.

664072107 is a deficient number, since it is larger than the sum of its proper divisors (224725077).

664072107 is a wasteful number, since it uses less digits than its factorization.

664072107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841929.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 664072107 is about 25769.5965626162. The cubic root of 664072107 is about 872.4457130505.

The spelling of 664072107 in words is "six hundred sixty-four million, seventy-two thousand, one hundred seven".