853725647 has 8 divisors (see below), whose sum is σ = 891169920. Its totient is φ = 816900480.

The previous prime is 853725641. The next prime is 853725667. The reversal of 853725647 is 746527358.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 853725647 - 2²⁰ = 852677071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853725641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151958 + ... + 157475.

It is an arithmetic number, because the mean of its divisors is an integer number (111396240).

Almost surely, 2^853725647 is an apocalyptic number.

853725647 is a deficient number, since it is larger than the sum of its proper divisors (37444273).

853725647 is a wasteful number, since it uses less digits than its factorization.

853725647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309553.

The product of its digits is 1411200, while the sum is 47.

The square root of 853725647 is about 29218.5839321484. The cubic root of 853725647 is about 948.6502149541.

It can be divided in two parts, 85372 and 5647, that added together give a palindrome (91019).

The spelling of 853725647 in words is "eight hundred fifty-three million, seven hundred twenty-five thousand, six hundred forty-seven".