71868545 has 24 divisors (see below), whose sum is σ = 105609600. Its totient is φ = 46684512.

The previous prime is 71868539. The next prime is 71868551. The reversal of 71868545 is 54586817.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (71868539) and next prime (71868551).

It is a de Polignac number, because none of the positive numbers 2^k-71868545 is a prime.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 71868496 and 71868505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3065 + ... + 12374.

It is an arithmetic number, because the mean of its divisors is an integer number (4400400).

Almost surely, 2^71868545 is an apocalyptic number.

It is an amenable number.

71868545 is a deficient number, since it is larger than the sum of its proper divisors (33741055).

71868545 is a wasteful number, since it uses less digits than its factorization.

71868545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15477 (or 15470 counting only the distinct ones).

The product of its digits is 268800, while the sum is 44.

The square root of 71868545 is about 8477.5317752280. The cubic root of 71868545 is about 415.7634275746.

The spelling of 71868545 in words is "seventy-one million, eight hundred sixty-eight thousand, five hundred forty-five".