63487768 has 8 divisors (see below), whose sum is σ = 119039580. Its totient is φ = 31743880.

The previous prime is 63487747. The next prime is 63487769. The reversal of 63487768 is 86778436.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63487769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3967978 + ... + 3967993.

Almost surely, 2^63487768 is an apocalyptic number.

It is an amenable number.

63487768 is a deficient number, since it is larger than the sum of its proper divisors (55551812).

63487768 is a wasteful number, since it uses less digits than its factorization.

63487768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7935977 (or 7935973 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 49.

The square root of 63487768 is about 7967.9211843492. The cubic root of 63487768 is about 398.9299902501.

The spelling of 63487768 in words is "sixty-three million, four hundred eighty-seven thousand, seven hundred sixty-eight".