63987266 has 8 divisors (see below), whose sum is σ = 109692480. Its totient is φ = 27423108.

The previous prime is 63987263. The next prime is 63987281. The reversal of 63987266 is 66278936.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 63987266.

It is not an unprimeable number, because it can be changed into a prime (63987263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2285246 + ... + 2285273.

It is an arithmetic number, because the mean of its divisors is an integer number (13711560).

Almost surely, 2^63987266 is an apocalyptic number.

63987266 is a deficient number, since it is larger than the sum of its proper divisors (45705214).

63987266 is a wasteful number, since it uses less digits than its factorization.

63987266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4570528.

The product of its digits is 653184, while the sum is 47.

The square root of 63987266 is about 7999.2040854075. The cubic root of 63987266 is about 399.9734690736.

The spelling of 63987266 in words is "sixty-three million, nine hundred eighty-seven thousand, two hundred sixty-six".