71864395 has 16 divisors (see below), whose sum is σ = 88846560. Its totient is φ = 55770624.

The previous prime is 71864393. The next prime is 71864411. The reversal of 71864395 is 59346817.

It is a cyclic number.

It is not a de Polignac number, because 71864395 - 2¹ = 71864393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (71864393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32691 + ... + 34819.

It is an arithmetic number, because the mean of its divisors is an integer number (5552910).

Almost surely, 2^71864395 is an apocalyptic number.

71864395 is a deficient number, since it is larger than the sum of its proper divisors (16982165).

71864395 is a wasteful number, since it uses less digits than its factorization.

71864395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2334.

The product of its digits is 181440, while the sum is 43.

The square root of 71864395 is about 8477.2870070560. The cubic root of 71864395 is about 415.7554247622.

The spelling of 71864395 in words is "seventy-one million, eight hundred sixty-four thousand, three hundred ninety-five".