71162613 has 6 divisors (see below), whose sum is σ = 102790454. Its totient is φ = 47441736.

The previous prime is 71162603. The next prime is 71162659. The reversal of 71162613 is 31626117.

It can be written as a sum of positive squares in only one way, i.e., 69856164 + 1306449 = 8358^2 + 1143^2 .

It is not a de Polignac number, because 71162613 - 2¹⁸ = 70900469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71162603) 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 5 ways as a sum of consecutive naturals, for example, 3953470 + ... + 3953487.

Almost surely, 2^71162613 is an apocalyptic number.

It is an amenable number.

71162613 is a deficient number, since it is larger than the sum of its proper divisors (31627841).

71162613 is a wasteful number, since it uses less digits than its factorization.

71162613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7906963 (or 7906960 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 71162613 is about 8435.7935607742. The cubic root of 71162613 is about 414.3976610390.

The spelling of 71162613 in words is "seventy-one million, one hundred sixty-two thousand, six hundred thirteen".