63871841 has 4 divisors (see below), whose sum is σ = 69678384. Its totient is φ = 58065300.

The previous prime is 63871793. The next prime is 63871853. The reversal of 63871841 is 14817836.

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 63871841 - 2⁶ = 63871777 is a prime.

It is a super-2 number, since 2×63871841² = 8159224145458562, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63871795 and 63871804.

It is not an unprimeable number, because it can be changed into a prime (63871541) 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, 2903255 + ... + 2903276.

It is an arithmetic number, because the mean of its divisors is an integer number (17419596).

Almost surely, 2^63871841 is an apocalyptic number.

It is an amenable number.

63871841 is a deficient number, since it is larger than the sum of its proper divisors (5806543).

63871841 is a wasteful number, since it uses less digits than its factorization.

63871841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5806542.

The product of its digits is 32256, while the sum is 38.

The square root of 63871841 is about 7991.9860485364. The cubic root of 63871841 is about 399.7328236651.

It can be divided in two parts, 6387 and 1841, that added together give a palindrome (8228).

The spelling of 63871841 in words is "sixty-three million, eight hundred seventy-one thousand, eight hundred forty-one".