636463469 has 2 divisors, whose sum is σ = 636463470. Its totient is φ = 636463468.

The previous prime is 636463439. The next prime is 636463481. The reversal of 636463469 is 964364636.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 608214244 + 28249225 = 24662^2 + 5315^2 .

It is a cyclic number.

It is not a de Polignac number, because 636463469 - 2²⁴ = 619686253 is a prime.

It is a super-2 number, since 2×636463469² = 810171494743027922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (636463439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318231734 + 318231735.

It is an arithmetic number, because the mean of its divisors is an integer number (318231735).

Almost surely, 2^636463469 is an apocalyptic number.

It is an amenable number.

636463469 is a deficient number, since it is larger than the sum of its proper divisors (1).

636463469 is an equidigital number, since it uses as much as digits as its factorization.

636463469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1679616, while the sum is 47.

The square root of 636463469 is about 25228.2276230416. The cubic root of 636463469 is about 860.1836046603.

The spelling of 636463469 in words is "six hundred thirty-six million, four hundred sixty-three thousand, four hundred sixty-nine".