71852789 has 4 divisors (see below), whose sum is σ = 73208556. Its totient is φ = 70497024.

The previous prime is 71852783. The next prime is 71852849. The reversal of 71852789 is 98725817.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98725817 = 17 ⋅5807401.

It can be written as a sum of positive squares in 2 ways, for example, as 32890225 + 38962564 = 5735^2 + 6242^2 .

It is a cyclic number.

It is not a de Polignac number, because 71852789 - 2²⁰ = 70804213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71852783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677804 + ... + 677909.

It is an arithmetic number, because the mean of its divisors is an integer number (18302139).

Almost surely, 2^71852789 is an apocalyptic number.

It is an amenable number.

71852789 is a deficient number, since it is larger than the sum of its proper divisors (1355767).

71852789 is a wasteful number, since it uses less digits than its factorization.

71852789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355766.

The product of its digits is 282240, while the sum is 47.

The square root of 71852789 is about 8476.6024443759. The cubic root of 71852789 is about 415.7330422493.

The spelling of 71852789 in words is "seventy-one million, eight hundred fifty-two thousand, seven hundred eighty-nine".