662345648671 has 4 divisors (see below), whose sum is σ = 756966455632. Its totient is φ = 567724841712.

The previous prime is 662345648669. The next prime is 662345648779. The reversal of 662345648671 is 176846543266.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 662345648671 - 2¹ = 662345648669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662345648071) 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 3 ways as a sum of consecutive naturals, for example, 47310403470 + ... + 47310403483.

It is an arithmetic number, because the mean of its divisors is an integer number (189241613908).

Almost surely, 2^662345648671 is an apocalyptic number.

662345648671 is a deficient number, since it is larger than the sum of its proper divisors (94620806961).

662345648671 is an equidigital number, since it uses as much as digits as its factorization.

662345648671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94620806960.

The product of its digits is 34836480, while the sum is 58.

The spelling of 662345648671 in words is "six hundred sixty-two billion, three hundred forty-five million, six hundred forty-eight thousand, six hundred seventy-one".