664115005 has 16 divisors (see below), whose sum is σ = 816963840. Its totient is φ = 517987008.

The previous prime is 664115003. The next prime is 664115009. The reversal of 664115005 is 500511466.

It is a cyclic number.

It is not a de Polignac number, because 664115005 - 2¹ = 664115003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664115003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129276 + ... + 134314.

It is an arithmetic number, because the mean of its divisors is an integer number (51060240).

Almost surely, 2^664115005 is an apocalyptic number.

It is an amenable number.

664115005 is a deficient number, since it is larger than the sum of its proper divisors (152848835).

664115005 is a wasteful number, since it uses less digits than its factorization.

664115005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5700.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 664115005 is about 25770.4288866134. The cubic root of 664115005 is about 872.4644988470.

The spelling of 664115005 in words is "six hundred sixty-four million, one hundred fifteen thousand, five".