163006726 has 4 divisors (see below), whose sum is σ = 244510092. Its totient is φ = 81503362.

The previous prime is 163006717. The next prime is 163006729. The reversal of 163006726 is 627600361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 627600361 = 1571 ⋅399491.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163006729) 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 as a sum of consecutive naturals, namely, 40751680 + ... + 40751683.

It is an arithmetic number, because the mean of its divisors is an integer number (61127523).

Almost surely, 2^163006726 is an apocalyptic number.

163006726 is a deficient number, since it is larger than the sum of its proper divisors (81503366).

163006726 is an equidigital number, since it uses as much as digits as its factorization.

163006726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81503365.

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

The square root of 163006726 is about 12767.4087425758. The cubic root of 163006726 is about 546.2630705522.

The spelling of 163006726 in words is "one hundred sixty-three million, six thousand, seven hundred twenty-six".