162216661 has 8 divisors (see below), whose sum is σ = 170881920. Its totient is φ = 153564192.

The previous prime is 162216643. The next prime is 162216701. The reversal of 162216661 is 166612261.

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

It is a cyclic number.

It is not a de Polignac number, because 162216661 - 2¹⁷ = 162085589 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 (162216161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34116 + ... + 38578.

It is an arithmetic number, because the mean of its divisors is an integer number (21360240).

Almost surely, 2^162216661 is an apocalyptic number.

It is an amenable number.

162216661 is a deficient number, since it is larger than the sum of its proper divisors (8665259).

162216661 is a wasteful number, since it uses less digits than its factorization.

162216661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6395.

The product of its digits is 5184, while the sum is 31.

The square root of 162216661 is about 12736.4304654012. The cubic root of 162216661 is about 545.3790937646.

The spelling of 162216661 in words is "one hundred sixty-two million, two hundred sixteen thousand, six hundred sixty-one".