71441865 has 32 divisors (see below), whose sum is σ = 138556800. Its totient is φ = 34637760.

The previous prime is 71441863. The next prime is 71441869. The reversal of 71441865 is 56814417.

It is a happy number.

It is not a de Polignac number, because 71441865 - 2¹ = 71441863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71441863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22570 + ... + 25539.

It is an arithmetic number, because the mean of its divisors is an integer number (4329900).

Almost surely, 2^71441865 is an apocalyptic number.

It is an amenable number.

71441865 is a deficient number, since it is larger than the sum of its proper divisors (67114935).

71441865 is a wasteful number, since it uses less digits than its factorization.

71441865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48134 (or 48128 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 71441865 is about 8452.3289689884. The cubic root of 71441865 is about 414.9390049225.

It can be divided in two parts, 7144 and 1865, that added together give a palindrome (9009).

The spelling of 71441865 in words is "seventy-one million, four hundred forty-one thousand, eight hundred sixty-five".