63943671 has 16 divisors (see below), whose sum is σ = 93195648. Its totient is φ = 38676000.

The previous prime is 63943667. The next prime is 63943679. The reversal of 63943671 is 17634936.

It is not a de Polignac number, because 63943671 - 2² = 63943667 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63943679) 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, 17721 + ... + 21021.

It is an arithmetic number, because the mean of its divisors is an integer number (5824728).

Almost surely, 2^63943671 is an apocalyptic number.

63943671 is a deficient number, since it is larger than the sum of its proper divisors (29251977).

63943671 is a wasteful number, since it uses less digits than its factorization.

63943671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3902.

The product of its digits is 81648, while the sum is 39.

The square root of 63943671 is about 7996.4786625114. The cubic root of 63943671 is about 399.8826134710.

The spelling of 63943671 in words is "sixty-three million, nine hundred forty-three thousand, six hundred seventy-one".