63240643 has 4 divisors (see below), whose sum is σ = 63723528. Its totient is φ = 62757760.

The previous prime is 63240613. The next prime is 63240647. The reversal of 63240643 is 34604236.

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 63240643 - 2⁹ = 63240131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63240647) 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, 241246 + ... + 241507.

It is an arithmetic number, because the mean of its divisors is an integer number (15930882).

Almost surely, 2^63240643 is an apocalyptic number.

63240643 is a deficient number, since it is larger than the sum of its proper divisors (482885).

63240643 is a wasteful number, since it uses less digits than its factorization.

63240643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482884.

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 63240643 is about 7952.3985689853. The cubic root of 63240643 is about 398.4117079180.

Adding to 63240643 its reverse (34604236), we get a palindrome (97844879).

The spelling of 63240643 in words is "sixty-three million, two hundred forty thousand, six hundred forty-three".