63878503 has 16 divisors (see below), whose sum is σ = 75358080. Its totient is φ = 53577216.

The previous prime is 63878501. The next prime is 63878509. The reversal of 63878503 is 30587836.

It is a cyclic number.

It is not a de Polignac number, because 63878503 - 2¹ = 63878501 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63878501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1426 + ... + 11392.

It is an arithmetic number, because the mean of its divisors is an integer number (4709880).

Almost surely, 2^63878503 is an apocalyptic number.

63878503 is a deficient number, since it is larger than the sum of its proper divisors (11479577).

63878503 is a wasteful number, since it uses less digits than its factorization.

63878503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10026.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 63878503 is about 7992.4028301882. The cubic root of 63878503 is about 399.7467209081.

The spelling of 63878503 in words is "sixty-three million, eight hundred seventy-eight thousand, five hundred three".