662643222657 has 48 divisors (see below), whose sum is σ = 960957728640. Its totient is φ = 403754254848.

The previous prime is 662643222643. The next prime is 662643222697. The reversal of 662643222657 is 756222346266.

It is not a de Polignac number, because 662643222657 - 2⁷ = 662643222529 is a prime.

It is a super-3 number, since 3×662643222657³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (662643222617) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 352656444 + ... + 352658322.

It is an arithmetic number, because the mean of its divisors is an integer number (20019952680).

Almost surely, 2^662643222657 is an apocalyptic number.

It is an amenable number.

662643222657 is a deficient number, since it is larger than the sum of its proper divisors (298314505983).

662643222657 is a wasteful number, since it uses less digits than its factorization.

662643222657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2522 (or 2325 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 51.

The spelling of 662643222657 in words is "six hundred sixty-two billion, six hundred forty-three million, two hundred twenty-two thousand, six hundred fifty-seven".