63871451 has 6 divisors (see below), whose sum is σ = 74299500. Its totient is φ = 54746916.

The previous prime is 63871447. The next prime is 63871459. The reversal of 63871451 is 15417836.

It is not a de Polignac number, because 63871451 - 2² = 63871447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63871459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 651701 + ... + 651798.

It is an arithmetic number, because the mean of its divisors is an integer number (12383250).

Almost surely, 2^63871451 is an apocalyptic number.

63871451 is a deficient number, since it is larger than the sum of its proper divisors (10428049).

63871451 is a wasteful number, since it uses less digits than its factorization.

63871451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303513 (or 1303506 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 63871451 is about 7991.9616490571. The cubic root of 63871451 is about 399.7320100769.

The spelling of 63871451 in words is "sixty-three million, eight hundred seventy-one thousand, four hundred fifty-one".