162646221 has 8 divisors (see below), whose sum is σ = 222151104. Its totient is φ = 105786080.

The previous prime is 162646189. The next prime is 162646223. The reversal of 162646221 is 122646261.

162646221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 162646221 - 2⁵ = 162646189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162646223) 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, 661041 + ... + 661286.

It is an arithmetic number, because the mean of its divisors is an integer number (27768888).

Almost surely, 2^162646221 is an apocalyptic number.

It is an amenable number.

162646221 is a deficient number, since it is larger than the sum of its proper divisors (59504883).

162646221 is a wasteful number, since it uses less digits than its factorization.

162646221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322371.

The product of its digits is 6912, while the sum is 30.

The square root of 162646221 is about 12753.2827538638. The cubic root of 162646221 is about 545.8600689324.

The spelling of 162646221 in words is "one hundred sixty-two million, six hundred forty-six thousand, two hundred twenty-one".