71964279 has 6 divisors (see below), whose sum is σ = 103948416. Its totient is φ = 47976180.

The previous prime is 71964271. The next prime is 71964289. The reversal of 71964279 is 97246917.

It is not a de Polignac number, because 71964279 - 2³ = 71964271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71964271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3998007 + ... + 3998024.

It is an arithmetic number, because the mean of its divisors is an integer number (17324736).

Almost surely, 2^71964279 is an apocalyptic number.

71964279 is a deficient number, since it is larger than the sum of its proper divisors (31984137).

71964279 is a wasteful number, since it uses less digits than its factorization.

71964279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7996037 (or 7996034 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 71964279 is about 8483.1762329920. The cubic root of 71964279 is about 415.9479544572.

The spelling of 71964279 in words is "seventy-one million, nine hundred sixty-four thousand, two hundred seventy-nine".