664713067325263 has 8 divisors (see below), whose sum is σ = 763306871569920. Its totient is φ = 572480153677080.

The previous prime is 664713067325243. The next prime is 664713067325269. The reversal of 664713067325263 is 362523760317466.

It is a happy number.

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

It is not a de Polignac number, because 664713067325263 - 2¹⁷ = 664713067194191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664713067325269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1590222648895 + ... + 1590222649312.

It is an arithmetic number, because the mean of its divisors is an integer number (95413358946240).

Almost surely, 2^{664713067325263} is an apocalyptic number.

664713067325263 is a deficient number, since it is larger than the sum of its proper divisors (98593804244657).

664713067325263 is a wasteful number, since it uses less digits than its factorization.

664713067325263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3180445298237.

The product of its (nonzero) digits is 137168640, while the sum is 61.

The spelling of 664713067325263 in words is "six hundred sixty-four trillion, seven hundred thirteen billion, sixty-seven million, three hundred twenty-five thousand, two hundred sixty-three".