662389801217 has 4 divisors (see below), whose sum is σ = 663566337840. Its totient is φ = 661213264596.

The previous prime is 662389801211. The next prime is 662389801253. The reversal of 662389801217 is 712108983266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-662389801217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662389801211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 588267467 + ... + 588268592.

It is an arithmetic number, because the mean of its divisors is an integer number (165891584460).

Almost surely, 2^662389801217 is an apocalyptic number.

It is an amenable number.

662389801217 is a deficient number, since it is larger than the sum of its proper divisors (1176536623).

662389801217 is a wasteful number, since it uses less digits than its factorization.

662389801217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176536622.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 662389801217 in words is "six hundred sixty-two billion, three hundred eighty-nine million, eight hundred one thousand, two hundred seventeen".