71873685 has 24 divisors (see below), whose sum is σ = 134165304. Its totient is φ = 35383680.

The previous prime is 71873657. The next prime is 71873699. The reversal of 71873685 is 58637817.

It can be written as a sum of positive squares in 4 ways, for example, as 14447601 + 57426084 = 3801^2 + 7578^2 .

It is not a de Polignac number, because 71873685 - 2⁵ = 71873653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 71873685.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60846 + ... + 62015.

It is an arithmetic number, because the mean of its divisors is an integer number (5590221).

Almost surely, 2^71873685 is an apocalyptic number.

It is an amenable number.

71873685 is a deficient number, since it is larger than the sum of its proper divisors (62291619).

71873685 is a wasteful number, since it uses less digits than its factorization.

71873685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122885 (or 122882 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 71873685 is about 8477.8349240829. The cubic root of 71873685 is about 415.7733390645.

The spelling of 71873685 in words is "seventy-one million, eight hundred seventy-three thousand, six hundred eighty-five".