63421187 has 4 divisors (see below), whose sum is σ = 63451776. Its totient is φ = 63390600.

The previous prime is 63421139. The next prime is 63421201. The reversal of 63421187 is 78112436.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63421187 - 2⁶ = 63421123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63421987) 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, 11939 + ... + 16412.

It is an arithmetic number, because the mean of its divisors is an integer number (15862944).

Almost surely, 2^63421187 is an apocalyptic number.

63421187 is a deficient number, since it is larger than the sum of its proper divisors (30589).

63421187 is a wasteful number, since it uses less digits than its factorization.

63421187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30588.

The product of its digits is 8064, while the sum is 32.

The square root of 63421187 is about 7963.7420224415. The cubic root of 63421187 is about 398.7904859591.

The spelling of 63421187 in words is "sixty-three million, four hundred twenty-one thousand, one hundred eighty-seven".