63903487 has 4 divisors (see below), whose sum is σ = 63920880. Its totient is φ = 63886096.

The previous prime is 63903473. The next prime is 63903509. The reversal of 63903487 is 78430936.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63903487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63903457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 787 + ... + 11332.

It is an arithmetic number, because the mean of its divisors is an integer number (15980220).

Almost surely, 2^63903487 is an apocalyptic number.

63903487 is a deficient number, since it is larger than the sum of its proper divisors (17393).

63903487 is a wasteful number, since it uses less digits than its factorization.

63903487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17392.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 63903487 is about 7993.9656616726. The cubic root of 63903487 is about 399.7988300936.

The spelling of 63903487 in words is "sixty-three million, nine hundred three thousand, four hundred eighty-seven".