662626668664 has 16 divisors (see below), whose sum is σ = 1242464904720. Its totient is φ = 331302694080.

The previous prime is 662626668631. The next prime is 662626668679. The reversal of 662626668664 is 466866626266.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 662626668596 and 662626668605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1062189 + ... + 1566364.

It is an arithmetic number, because the mean of its divisors is an integer number (77654056545).

Almost surely, 2^662626668664 is an apocalyptic number.

It is an amenable number.

662626668664 is a deficient number, since it is larger than the sum of its proper divisors (579838236056).

662626668664 is a wasteful number, since it uses less digits than its factorization.

662626668664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2660070 (or 2660066 counting only the distinct ones).

The product of its digits is 214990848, while the sum is 64.

The spelling of 662626668664 in words is "six hundred sixty-two billion, six hundred twenty-six million, six hundred sixty-eight thousand, six hundred sixty-four".