163722 has 16 divisors (see below), whose sum is σ = 352800. Its totient is φ = 50352.

The previous prime is 163697. The next prime is 163729. The reversal of 163722 is 227361.

It is a happy number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (163729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 972 + ... + 1127.

It is an arithmetic number, because the mean of its divisors is an integer number (22050).

2¹⁶³⁷²² is an apocalyptic number.

163722 is an abundant number, since it is smaller than the sum of its proper divisors (189078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163722 is a wasteful number, since it uses less digits than its factorization.

163722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117.

The product of its digits is 504, while the sum is 21.

The square root of 163722 is about 404.6257530113. The cubic root of 163722 is about 54.7060906047.

The spelling of 163722 in words is "one hundred sixty-three thousand, seven hundred twenty-two".