63919964 has 12 divisors (see below), whose sum is σ = 111940584. Its totient is φ = 31936944.

The previous prime is 63919963. The next prime is 63919991. The reversal of 63919964 is 46991936.

It is a super-2 number, since 2×63919964² = 8171523595522592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63919963) 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, 1499 + ... + 11405.

It is an arithmetic number, because the mean of its divisors is an integer number (9328382).

Almost surely, 2^63919964 is an apocalyptic number.

It is an amenable number.

63919964 is a deficient number, since it is larger than the sum of its proper divisors (48020620).

63919964 is a wasteful number, since it uses less digits than its factorization.

63919964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11524 (or 11522 counting only the distinct ones).

The product of its digits is 314928, while the sum is 47.

The square root of 63919964 is about 7994.9961851148. The cubic root of 63919964 is about 399.8331887780.

The spelling of 63919964 in words is "sixty-three million, nine hundred nineteen thousand, nine hundred sixty-four".