71979695 has 16 divisors (see below), whose sum is σ = 92419680. Its totient is φ = 53654400.

The previous prime is 71979667. The next prime is 71979697. The reversal of 71979695 is 59697917.

It is not a de Polignac number, because 71979695 - 2¹⁰ = 71978671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71979697) 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 15 ways as a sum of consecutive naturals, for example, 416 + ... + 12005.

It is an arithmetic number, because the mean of its divisors is an integer number (5776230).

Almost surely, 2^71979695 is an apocalyptic number.

71979695 is a deficient number, since it is larger than the sum of its proper divisors (20439985).

71979695 is a wasteful number, since it uses less digits than its factorization.

71979695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12506.

The product of its digits is 1071630, while the sum is 53.

The square root of 71979695 is about 8484.0848062711. The cubic root of 71979695 is about 415.9776534316.

The spelling of 71979695 in words is "seventy-one million, nine hundred seventy-nine thousand, six hundred ninety-five".