668224267757 has 8 divisors (see below), whose sum is σ = 703401701760. Its totient is φ = 633047607360.

The previous prime is 668224267751. The next prime is 668224267817. The reversal of 668224267757 is 757762422866.

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

It is a cyclic number.

It is not a de Polignac number, because 668224267757 - 2¹² = 668224263661 is a prime.

It is a super-2 number, since 2×668224267757² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 668224267757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668224267751) 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, 2656748 + ... + 2897370.

It is an arithmetic number, because the mean of its divisors is an integer number (87925212720).

Almost surely, 2^668224267757 is an apocalyptic number.

It is an amenable number.

668224267757 is a deficient number, since it is larger than the sum of its proper divisors (35177434003).

668224267757 is a wasteful number, since it uses less digits than its factorization.

668224267757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386803.

The product of its digits is 94832640, while the sum is 62.

The spelling of 668224267757 in words is "six hundred sixty-eight billion, two hundred twenty-four million, two hundred sixty-seven thousand, seven hundred fifty-seven".