664089178363 has 8 divisors (see below), whose sum is σ = 718917325056. Its totient is φ = 609795940800.

The previous prime is 664089178289. The next prime is 664089178387. The reversal of 664089178363 is 363871980466.

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

It is a cyclic number.

It is not a de Polignac number, because 664089178363 - 2¹⁷ = 664089047291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664089178393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133724698 + ... + 133729663.

It is an arithmetic number, because the mean of its divisors is an integer number (89864665632).

Almost surely, 2^664089178363 is an apocalyptic number.

664089178363 is a deficient number, since it is larger than the sum of its proper divisors (54828146693).

664089178363 is a wasteful number, since it uses less digits than its factorization.

664089178363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267454565.

The product of its (nonzero) digits is 31352832, while the sum is 61.

The spelling of 664089178363 in words is "six hundred sixty-four billion, eighty-nine million, one hundred seventy-eight thousand, three hundred sixty-three".