63534399 has 4 divisors (see below), whose sum is σ = 84712536. Its totient is φ = 42356264.

The previous prime is 63534337. The next prime is 63534409. The reversal of 63534399 is 99343536.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63534399 - 2¹¹ = 63532351 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63534399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63534319) 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 3 ways as a sum of consecutive naturals, for example, 10589064 + ... + 10589069.

It is an arithmetic number, because the mean of its divisors is an integer number (21178134).

Almost surely, 2^63534399 is an apocalyptic number.

63534399 is a deficient number, since it is larger than the sum of its proper divisors (21178137).

63534399 is a wasteful number, since it uses less digits than its factorization.

63534399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21178136.

The product of its digits is 262440, while the sum is 42.

The square root of 63534399 is about 7970.8468182496. The cubic root of 63534399 is about 399.0276361031.

The spelling of 63534399 in words is "sixty-three million, five hundred thirty-four thousand, three hundred ninety-nine".