662221366273 has 4 divisors (see below), whose sum is σ = 663235488468. Its totient is φ = 661207244080.

The previous prime is 662221366271. The next prime is 662221366307. The reversal of 662221366273 is 372663122266.

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

It can be written as a sum of positive squares in 2 ways, for example, as 428616377344 + 233604988929 = 654688^2 + 483327^2 .

It is a cyclic number.

It is not a de Polignac number, because 662221366273 - 2¹ = 662221366271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662221366271) 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, 507060118 + ... + 507061423.

It is an arithmetic number, because the mean of its divisors is an integer number (165808872117).

Almost surely, 2^662221366273 is an apocalyptic number.

It is an amenable number.

662221366273 is a deficient number, since it is larger than the sum of its proper divisors (1014122195).

662221366273 is a wasteful number, since it uses less digits than its factorization.

662221366273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014122194.

The product of its digits is 1306368, while the sum is 46.

The spelling of 662221366273 in words is "six hundred sixty-two billion, two hundred twenty-one million, three hundred sixty-six thousand, two hundred seventy-three".