1660662284663 has 4 divisors (see below), whose sum is σ = 1661257293648. Its totient is φ = 1660067275680.

The previous prime is 1660662284647. The next prime is 1660662284753. The reversal of 1660662284663 is 3664822660661.

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

It is a cyclic number.

It is not a de Polignac number, because 1660662284663 - 2⁴ = 1660662284647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1660662284599 and 1660662284608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660662284363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297500306 + ... + 297505887.

It is an arithmetic number, because the mean of its divisors is an integer number (415314323412).

Almost surely, 2^{1660662284663} is an apocalyptic number.

1660662284663 is a deficient number, since it is larger than the sum of its proper divisors (595008985).

1660662284663 is an equidigital number, since it uses as much as digits as its factorization.

1660662284663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595008984.

The product of its (nonzero) digits is 17915904, while the sum is 56.

The spelling of 1660662284663 in words is "one trillion, six hundred sixty billion, six hundred sixty-two million, two hundred eighty-four thousand, six hundred sixty-three".