63501663 has 8 divisors (see below), whose sum is σ = 85491328. Its totient is φ = 41923224.

The previous prime is 63501649. The next prime is 63501673. The reversal of 63501663 is 36610536.

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

It is not a de Polignac number, because 63501663 - 2⁸ = 63501407 is a prime.

It is a super-2 number, since 2×63501663² = 8064922407531138, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63501663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63501623) 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 7 ways as a sum of consecutive naturals, for example, 102445 + ... + 103062.

It is an arithmetic number, because the mean of its divisors is an integer number (10686416).

Almost surely, 2^63501663 is an apocalyptic number.

63501663 is a deficient number, since it is larger than the sum of its proper divisors (21989665).

63501663 is a wasteful number, since it uses less digits than its factorization.

63501663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205613.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 63501663 is about 7968.7930704718. The cubic root of 63501663 is about 398.9590915402.

The spelling of 63501663 in words is "sixty-three million, five hundred one thousand, six hundred sixty-three".