63987469 has 16 divisors (see below), whose sum is σ = 79488640. Its totient is φ = 50155200.

The previous prime is 63987457. The next prime is 63987487. The reversal of 63987469 is 96478936.

It is a cyclic number.

It is not a de Polignac number, because 63987469 - 2⁹ = 63986957 is a prime.

It is a super-2 number, since 2×63987469² = 8188792378051922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63987419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6694 + ... + 13144.

It is an arithmetic number, because the mean of its divisors is an integer number (4968040).

Almost surely, 2^63987469 is an apocalyptic number.

It is an amenable number.

63987469 is a deficient number, since it is larger than the sum of its proper divisors (15501171).

63987469 is a wasteful number, since it uses less digits than its factorization.

63987469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6580.

The product of its digits is 1959552, while the sum is 52.

The square root of 63987469 is about 7999.2167741598. The cubic root of 63987469 is about 399.9738920460.

The spelling of 63987469 in words is "sixty-three million, nine hundred eighty-seven thousand, four hundred sixty-nine".