852740641 has 4 divisors (see below), whose sum is σ = 853037892. Its totient is φ = 852443392.

The previous prime is 852740597. The next prime is 852740659. The reversal of 852740641 is 146047258.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51624225 + 801116416 = 7185^2 + 28304^2 .

It is a cyclic number.

It is not a de Polignac number, because 852740641 - 2⁷ = 852740513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 852740641.

It is not an unprimeable number, because it can be changed into a prime (852743641) 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, 144280 + ... + 150073.

It is an arithmetic number, because the mean of its divisors is an integer number (213259473).

Almost surely, 2^852740641 is an apocalyptic number.

It is an amenable number.

852740641 is a deficient number, since it is larger than the sum of its proper divisors (297251).

852740641 is a wasteful number, since it uses less digits than its factorization.

852740641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297250.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 852740641 is about 29201.7232539451. The cubic root of 852740641 is about 948.2852320662.

Adding to 852740641 its reverse (146047258), we get a palindrome (998787899).

The spelling of 852740641 in words is "eight hundred fifty-two million, seven hundred forty thousand, six hundred forty-one".