63871695 has 12 divisors (see below), whose sum is σ = 110711016. Its totient is φ = 34064880.

The previous prime is 63871679. The next prime is 63871723. The reversal of 63871695 is 59617836.

It is a happy number.

63871695 is a `hidden beast` number, since 638 + 7 + 1 + 6 + 9 + 5 = 666.

63871695 is nontrivially palindromic in base 4.

It is not a de Polignac number, because 63871695 - 2⁴ = 63871679 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1419371 = 63871695 / (6 + 3 + 8 + 7 + 1 + 6 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 63871695.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 709641 + ... + 709730.

It is an arithmetic number, because the mean of its divisors is an integer number (9225918).

Almost surely, 2^63871695 is an apocalyptic number.

63871695 is a deficient number, since it is larger than the sum of its proper divisors (46839321).

63871695 is a wasteful number, since it uses less digits than its factorization.

63871695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419382 (or 1419379 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 63871695 is about 7991.9769143811. The cubic root of 63871695 is about 399.7325190914.

The spelling of 63871695 in words is "sixty-three million, eight hundred seventy-one thousand, six hundred ninety-five".