65643063 has 4 divisors (see below), whose sum is σ = 87524088. Its totient is φ = 43762040.

The previous prime is 65643041. The next prime is 65643077. The reversal of 65643063 is 36034656.

It is a happy number.

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 65643063 - 2⁶ = 65642999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65643013) 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, 10940508 + ... + 10940513.

It is an arithmetic number, because the mean of its divisors is an integer number (21881022).

Almost surely, 2^65643063 is an apocalyptic number.

65643063 is a deficient number, since it is larger than the sum of its proper divisors (21881025).

65643063 is a wasteful number, since it uses less digits than its factorization.

65643063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21881024.

The product of its (nonzero) digits is 38880, while the sum is 33.

The square root of 65643063 is about 8102.0406688686. The cubic root of 65643063 is about 403.3941655546.

The spelling of 65643063 in words is "sixty-five million, six hundred forty-three thousand, sixty-three".