64563242 has 8 divisors (see below), whose sum is σ = 98905536. Its totient is φ = 31594732.

The previous prime is 64563241. The next prime is 64563269. The reversal of 64563242 is 24236546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 64563199 and 64563208.

It is not an unprimeable number, because it can be changed into a prime (64563241) 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, 343328 + ... + 343515.

It is an arithmetic number, because the mean of its divisors is an integer number (12363192).

Almost surely, 2^64563242 is an apocalyptic number.

64563242 is a deficient number, since it is larger than the sum of its proper divisors (34342294).

64563242 is a wasteful number, since it uses less digits than its factorization.

64563242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686892.

The product of its digits is 34560, while the sum is 32.

The square root of 64563242 is about 8035.1255123987. The cubic root of 64563242 is about 401.1699952743.

Adding to 64563242 its reverse (24236546), we get a palindrome (88799788).

The spelling of 64563242 in words is "sixty-four million, five hundred sixty-three thousand, two hundred forty-two".