163621327 has 2 divisors, whose sum is σ = 163621328. Its totient is φ = 163621326.

The previous prime is 163621319. The next prime is 163621343. The reversal of 163621327 is 723126361.

163621327 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 163621327 - 2³ = 163621319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163621357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81810663 + 81810664.

It is an arithmetic number, because the mean of its divisors is an integer number (81810664).

Almost surely, 2^163621327 is an apocalyptic number.

163621327 is a deficient number, since it is larger than the sum of its proper divisors (1).

163621327 is an equidigital number, since it uses as much as digits as its factorization.

163621327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 31.

The square root of 163621327 is about 12791.4552338661. The cubic root of 163621327 is about 546.9487534249.

Adding to 163621327 its reverse (723126361), we get a palindrome (886747688).

It can be divided in two parts, 16362 and 1327, that added together give a square (17689 = 133²).

The spelling of 163621327 in words is "one hundred sixty-three million, six hundred twenty-one thousand, three hundred twenty-seven".