63436009 has 12 divisors (see below), whose sum is σ = 78505536. Its totient is φ = 50190192.

The previous prime is 63435991. The next prime is 63436049. The reversal of 63436009 is 90063436.

It is not a de Polignac number, because 63436009 - 2¹⁷ = 63304937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63436049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25629 + ... + 27994.

It is an arithmetic number, because the mean of its divisors is an integer number (6542128).

Almost surely, 2^63436009 is an apocalyptic number.

It is an amenable number.

63436009 is a deficient number, since it is larger than the sum of its proper divisors (15069527).

63436009 is a wasteful number, since it uses less digits than its factorization.

63436009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53656 (or 53643 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 63436009 is about 7964.6725607523. The cubic root of 63436009 is about 398.8215503003.

The spelling of 63436009 in words is "sixty-three million, four hundred thirty-six thousand, nine".