63216169 has 2 divisors, whose sum is σ = 63216170. Its totient is φ = 63216168.

The previous prime is 63216163. The next prime is 63216187. The reversal of 63216169 is 96161236.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56430144 + 6786025 = 7512^2 + 2605^2 .

It is a cyclic number.

It is not a de Polignac number, because 63216169 - 2¹⁵ = 63183401 is a prime.

It is a super-2 number, since 2×63216169² = 7992568046073122, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (63216163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31608084 + 31608085.

It is an arithmetic number, because the mean of its divisors is an integer number (31608085).

Almost surely, 2^63216169 is an apocalyptic number.

It is an amenable number.

63216169 is a deficient number, since it is larger than the sum of its proper divisors (1).

63216169 is an equidigital number, since it uses as much as digits as its factorization.

63216169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 34.

The square root of 63216169 is about 7950.8596390579. The cubic root of 63216169 is about 398.3603064469.

The spelling of 63216169 in words is "sixty-three million, two hundred sixteen thousand, one hundred sixty-nine".