664648193483 has 4 divisors (see below), whose sum is σ = 671228868768. Its totient is φ = 658067518200.

The previous prime is 664648193471. The next prime is 664648193551. The reversal of 664648193483 is 384391846466.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 664648193483 - 2¹⁴ = 664648177099 is a prime.

It is a super-2 number, since 2×664648193483² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664648193383) 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 3 ways as a sum of consecutive naturals, for example, 3290337491 + ... + 3290337692.

It is an arithmetic number, because the mean of its divisors is an integer number (167807217192).

Almost surely, 2^664648193483 is an apocalyptic number.

664648193483 is a deficient number, since it is larger than the sum of its proper divisors (6580675285).

664648193483 is a wasteful number, since it uses less digits than its factorization.

664648193483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6580675284.

The product of its digits is 71663616, while the sum is 62.

The spelling of 664648193483 in words is "six hundred sixty-four billion, six hundred forty-eight million, one hundred ninety-three thousand, four hundred eighty-three".