71683839 has 8 divisors (see below), whose sum is σ = 106198320. Its totient is φ = 47789208.

The previous prime is 71683819. The next prime is 71683877. The reversal of 71683839 is 93838617.

It is a happy number.

It is not a de Polignac number, because 71683839 - 2⁹ = 71683327 is a prime.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 71683794 and 71683803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71683819) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1327452 + ... + 1327505.

It is an arithmetic number, because the mean of its divisors is an integer number (13274790).

Almost surely, 2^71683839 is an apocalyptic number.

71683839 is a deficient number, since it is larger than the sum of its proper divisors (34514481).

71683839 is a wasteful number, since it uses less digits than its factorization.

71683839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2654966 (or 2654960 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 71683839 is about 8466.6309119980. The cubic root of 71683839 is about 415.4069439327.

The spelling of 71683839 in words is "seventy-one million, six hundred eighty-three thousand, eight hundred thirty-nine".