63889564 has 6 divisors (see below), whose sum is σ = 111806744. Its totient is φ = 31944780.

The previous prime is 63889559. The next prime is 63889589. The reversal of 63889564 is 46598836.

It is a happy number.

It is a super-2 number, since 2×63889564² = 8163752776220192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7986192 + ... + 7986199.

Almost surely, 2^63889564 is an apocalyptic number.

It is an amenable number.

63889564 is a deficient number, since it is larger than the sum of its proper divisors (47917180).

63889564 is a wasteful number, since it uses less digits than its factorization.

63889564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15972395 (or 15972393 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 49.

The square root of 63889564 is about 7993.0947698623. The cubic root of 63889564 is about 399.7697925367.

The spelling of 63889564 in words is "sixty-three million, eight hundred eighty-nine thousand, five hundred sixty-four".