63378687 has 4 divisors (see below), whose sum is σ = 84504920. Its totient is φ = 42252456.

The previous prime is 63378677. The next prime is 63378697. The reversal of 63378687 is 78687336.

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

It is an interprime number because it is at equal distance from previous prime (63378677) and next prime (63378697).

It is not a de Polignac number, because 63378687 - 2⁷ = 63378559 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 (63378617) 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 3 ways as a sum of consecutive naturals, for example, 10563112 + ... + 10563117.

It is an arithmetic number, because the mean of its divisors is an integer number (21126230).

Almost surely, 2^63378687 is an apocalyptic number.

63378687 is a deficient number, since it is larger than the sum of its proper divisors (21126233).

63378687 is a wasteful number, since it uses less digits than its factorization.

63378687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21126232.

The product of its digits is 1016064, while the sum is 48.

The square root of 63378687 is about 7961.0732316692. The cubic root of 63378687 is about 398.7013864865.

The spelling of 63378687 in words is "sixty-three million, three hundred seventy-eight thousand, six hundred eighty-seven".