63564169 has 2 divisors, whose sum is σ = 63564170. Its totient is φ = 63564168.

The previous prime is 63564131. The next prime is 63564199. The reversal of 63564169 is 96146536.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44089600 + 19474569 = 6640^2 + 4413^2 .

It is a cyclic number.

It is not a de Polignac number, because 63564169 - 2⁹ = 63563657 is a prime.

It is a super-2 number, since 2×63564169² = 8080807161321122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63564199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31782084 + 31782085.

It is an arithmetic number, because the mean of its divisors is an integer number (31782085).

Almost surely, 2^63564169 is an apocalyptic number.

It is an amenable number.

63564169 is a deficient number, since it is larger than the sum of its proper divisors (1).

63564169 is an equidigital number, since it uses as much as digits as its factorization.

63564169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 40.

The square root of 63564169 is about 7972.7140297392. The cubic root of 63564169 is about 399.0899498420.

The spelling of 63564169 in words is "sixty-three million, five hundred sixty-four thousand, one hundred sixty-nine".