72063169 has 2 divisors, whose sum is σ = 72063170. Its totient is φ = 72063168.

The previous prime is 72063149. The next prime is 72063179. The reversal of 72063169 is 96136027.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44395569 + 27667600 = 6663^2 + 5260^2 .

It is a cyclic number.

It is not a de Polignac number, because 72063169 - 2⁵ = 72063137 is a prime.

It is a super-2 number, since 2×72063169² = 10386200652645122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72063149) 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 as a sum of consecutive naturals, namely, 36031584 + 36031585.

It is an arithmetic number, because the mean of its divisors is an integer number (36031585).

Almost surely, 2^72063169 is an apocalyptic number.

It is an amenable number.

72063169 is a deficient number, since it is larger than the sum of its proper divisors (1).

72063169 is an equidigital number, since it uses as much as digits as its factorization.

72063169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 72063169 is about 8489.0028271877. The cubic root of 72063169 is about 416.1383927649.

The spelling of 72063169 in words is "seventy-two million, sixty-three thousand, one hundred sixty-nine".