63871061 has 4 divisors (see below), whose sum is σ = 64263072. Its totient is φ = 63479052.

The previous prime is 63871051. The next prime is 63871063. The reversal of 63871061 is 16017836.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63871061 - 2⁶ = 63870997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63871063) 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, 195761 + ... + 196086.

It is an arithmetic number, because the mean of its divisors is an integer number (16065768).

Almost surely, 2^63871061 is an apocalyptic number.

It is an amenable number.

63871061 is a deficient number, since it is larger than the sum of its proper divisors (392011).

63871061 is a wasteful number, since it uses less digits than its factorization.

63871061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392010.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 63871061 is about 7991.9372495034. The cubic root of 63871061 is about 399.7311964855.

Adding to 63871061 its reverse (16017836), we get a palindrome (79888897).

The spelling of 63871061 in words is "sixty-three million, eight hundred seventy-one thousand, sixty-one".