668090653064 has 32 divisors (see below), whose sum is σ = 1268086881600. Its totient is φ = 329958552000.

The previous prime is 668090653051. The next prime is 668090653073. The reversal of 668090653064 is 460356090866.

It is a super-2 number, since 2×668090653064² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 668090652997 and 668090653015.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1305812 + ... + 1743939.

It is an arithmetic number, because the mean of its divisors is an integer number (39627715050).

Almost surely, 2^668090653064 is an apocalyptic number.

It is an amenable number.

668090653064 is a deficient number, since it is larger than the sum of its proper divisors (599996228536).

668090653064 is a wasteful number, since it uses less digits than its factorization.

668090653064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3050093 (or 3050089 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 53.

The spelling of 668090653064 in words is "six hundred sixty-eight billion, ninety million, six hundred fifty-three thousand, sixty-four".