72337169 has 2 divisors, whose sum is σ = 72337170. Its totient is φ = 72337168.

The previous prime is 72337163. The next prime is 72337171. The reversal of 72337169 is 96173327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57988225 + 14348944 = 7615^2 + 3788^2 .

It is a cyclic number.

It is not a de Polignac number, because 72337169 - 2¹² = 72333073 is a prime.

It is a super-2 number, since 2×72337169² = 10465332037869122, which contains 22 as substring.

Together with 72337171, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72337163) 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, 36168584 + 36168585.

It is an arithmetic number, because the mean of its divisors is an integer number (36168585).

Almost surely, 2^72337169 is an apocalyptic number.

It is an amenable number.

72337169 is a deficient number, since it is larger than the sum of its proper divisors (1).

72337169 is an equidigital number, since it uses as much as digits as its factorization.

72337169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47628, while the sum is 38.

The square root of 72337169 is about 8505.1260425699. The cubic root of 72337169 is about 416.6651422522.

The spelling of 72337169 in words is "seventy-two million, three hundred thirty-seven thousand, one hundred sixty-nine".