163622723 has 4 divisors (see below), whose sum is σ = 178497528. Its totient is φ = 148747920.

The previous prime is 163622689. The next prime is 163622741. The reversal of 163622723 is 327226361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 163622723 - 2¹² = 163618627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163622723.

It is not an unprimeable number, because it can be changed into a prime (163622423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7437386 + ... + 7437407.

It is an arithmetic number, because the mean of its divisors is an integer number (44624382).

Almost surely, 2^163622723 is an apocalyptic number.

163622723 is a deficient number, since it is larger than the sum of its proper divisors (14874805).

163622723 is a wasteful number, since it uses less digits than its factorization.

163622723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14874804.

The product of its digits is 18144, while the sum is 32.

The square root of 163622723 is about 12791.5098014269. The cubic root of 163622723 is about 546.9503089236.

The spelling of 163622723 in words is "one hundred sixty-three million, six hundred twenty-two thousand, seven hundred twenty-three".