664614358167 has 16 divisors (see below), whose sum is σ = 901850993120. Its totient is φ = 435245875200.

The previous prime is 664614358151. The next prime is 664614358169. The reversal of 664614358167 is 761853416466.

It is not a de Polignac number, because 664614358167 - 2⁴ = 664614358151 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664614358169) 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, 2220634 + ... + 2502087.

It is an arithmetic number, because the mean of its divisors is an integer number (56365687070).

Almost surely, 2^664614358167 is an apocalyptic number.

664614358167 is a deficient number, since it is larger than the sum of its proper divisors (237236634953).

664614358167 is a wasteful number, since it uses less digits than its factorization.

664614358167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4723554.

The product of its digits is 17418240, while the sum is 57.

The spelling of 664614358167 in words is "six hundred sixty-four billion, six hundred fourteen million, three hundred fifty-eight thousand, one hundred sixty-seven".