63489845 has 8 divisors (see below), whose sum is σ = 78815160. Its totient is φ = 49040320.

The previous prime is 63489827. The next prime is 63489847. The reversal of 63489845 is 54898436.

It can be written as a sum of positive squares in 4 ways, for example, as 19307236 + 44182609 = 4394^2 + 6647^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-63489845 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 63489845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63489847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218786 + ... + 219075.

It is an arithmetic number, because the mean of its divisors is an integer number (9851895).

Almost surely, 2^63489845 is an apocalyptic number.

It is an amenable number.

63489845 is a deficient number, since it is larger than the sum of its proper divisors (15325315).

63489845 is a wasteful number, since it uses less digits than its factorization.

63489845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437895.

The product of its digits is 829440, while the sum is 47.

The square root of 63489845 is about 7968.0515184077. The cubic root of 63489845 is about 398.9343405293.

The spelling of 63489845 in words is "sixty-three million, four hundred eighty-nine thousand, eight hundred forty-five".