163066021 has 8 divisors (see below), whose sum is σ = 171912384. Its totient is φ = 154366080.

The previous prime is 163066003. The next prime is 163066027. The reversal of 163066021 is 120660361.

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 163066021 - 2¹⁷ = 162934949 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 (163066027) 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, 34315 + ... + 38776.

It is an arithmetic number, because the mean of its divisors is an integer number (21489048).

Almost surely, 2^163066021 is an apocalyptic number.

It is an amenable number.

163066021 is a deficient number, since it is larger than the sum of its proper divisors (8846363).

163066021 is an equidigital number, since it uses as much as digits as its factorization.

163066021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73211.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 163066021 is about 12769.7306549512. The cubic root of 163066021 is about 546.3292983758.

The spelling of 163066021 in words is "one hundred sixty-three million, sixty-six thousand, twenty-one".