71161893 has 12 divisors (see below), whose sum is σ = 112134048. Its totient is φ = 43128360.

The previous prime is 71161879. The next prime is 71161903. The reversal of 71161893 is 39816117.

It is not a de Polignac number, because 71161893 - 2⁴ = 71161877 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71161843) 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 11 ways as a sum of consecutive naturals, for example, 359305 + ... + 359502.

It is an arithmetic number, because the mean of its divisors is an integer number (9344504).

Almost surely, 2^71161893 is an apocalyptic number.

It is an amenable number.

71161893 is a deficient number, since it is larger than the sum of its proper divisors (40972155).

71161893 is a wasteful number, since it uses less digits than its factorization.

71161893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718824 (or 718821 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 71161893 is about 8435.7508853688. The cubic root of 71161893 is about 414.3962634544.

It can be divided in two parts, 7116 and 1893, that added together give a palindrome (9009).

The spelling of 71161893 in words is "seventy-one million, one hundred sixty-one thousand, eight hundred ninety-three".