71864339 has 8 divisors (see below), whose sum is σ = 73348800. Its totient is φ = 70393536.

The previous prime is 71864311. The next prime is 71864357. The reversal of 71864339 is 93346817.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71864339 - 2²⁰ = 70815763 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71864296 and 71864305.

It is not an unprimeable number, because it can be changed into a prime (71864369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7574 + ... + 14180.

It is an arithmetic number, because the mean of its divisors is an integer number (9168600).

Almost surely, 2^71864339 is an apocalyptic number.

71864339 is a deficient number, since it is larger than the sum of its proper divisors (1484461).

71864339 is a wasteful number, since it uses less digits than its factorization.

71864339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6829.

The product of its digits is 108864, while the sum is 41.

The square root of 71864339 is about 8477.2837041118. The cubic root of 71864339 is about 415.7553167704.

The spelling of 71864339 in words is "seventy-one million, eight hundred sixty-four thousand, three hundred thirty-nine".