662811684481 has 8 divisors (see below), whose sum is σ = 697707522720. Its totient is φ = 627916947552.

The previous prime is 662811684461. The next prime is 662811684487. The reversal of 662811684481 is 184486118266.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-662811684481 is a prime.

It is a super-2 number, since 2×662811684481² (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 (662811684487) 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 7 ways as a sum of consecutive naturals, for example, 1149021 + ... + 1626613.

It is an arithmetic number, because the mean of its divisors is an integer number (87213440340).

Almost surely, 2^662811684481 is an apocalyptic number.

It is an amenable number.

662811684481 is a deficient number, since it is larger than the sum of its proper divisors (34895838239).

662811684481 is a wasteful number, since it uses less digits than its factorization.

662811684481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550655.

The product of its digits is 3538944, while the sum is 55.

The spelling of 662811684481 in words is "six hundred sixty-two billion, eight hundred eleven million, six hundred eighty-four thousand, four hundred eighty-one".