63968435 has 4 divisors (see below), whose sum is σ = 76762128. Its totient is φ = 51174744.

The previous prime is 63968431. The next prime is 63968447. The reversal of 63968435 is 53486936.

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 63968435 - 2² = 63968431 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63968431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6396839 + ... + 6396848.

It is an arithmetic number, because the mean of its divisors is an integer number (19190532).

Almost surely, 2^63968435 is an apocalyptic number.

63968435 is a deficient number, since it is larger than the sum of its proper divisors (12793693).

63968435 is a wasteful number, since it uses less digits than its factorization.

63968435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12793692.

The product of its digits is 466560, while the sum is 44.

The square root of 63968435 is about 7998.0269441907. The cubic root of 63968435 is about 399.9342287693.

The spelling of 63968435 in words is "sixty-three million, nine hundred sixty-eight thousand, four hundred thirty-five".