63712643 has 4 divisors (see below), whose sum is σ = 67065960. Its totient is φ = 60359328.

The previous prime is 63712619. The next prime is 63712667. The reversal of 63712643 is 34621736.

63712643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (63712619) and next prime (63712667).

It is a cyclic number.

It is not a de Polignac number, because 63712643 - 2⁸ = 63712387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63712673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1676630 + ... + 1676667.

It is an arithmetic number, because the mean of its divisors is an integer number (16766490).

Almost surely, 2^63712643 is an apocalyptic number.

63712643 is a deficient number, since it is larger than the sum of its proper divisors (3353317).

63712643 is a wasteful number, since it uses less digits than its factorization.

63712643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3353316.

The product of its digits is 18144, while the sum is 32.

The square root of 63712643 is about 7982.0199824355. The cubic root of 63712643 is about 399.4004413559.

The spelling of 63712643 in words is "sixty-three million, seven hundred twelve thousand, six hundred forty-three".