853513620 has 96 divisors (see below), whose sum is σ = 2430425088. Its totient is φ = 223773312.

The previous prime is 853513553. The next prime is 853513627. The reversal of 853513620 is 26315358.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853513627) 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 31 ways as a sum of consecutive naturals, for example, 1031647 + ... + 1032473.

It is an arithmetic number, because the mean of its divisors is an integer number (25316928).

Almost surely, 2^853513620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 853513620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1215212544).

853513620 is an abundant number, since it is smaller than the sum of its proper divisors (1576911468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

853513620 is a wasteful number, since it uses less digits than its factorization.

853513620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109 (or 1107 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 853513620 is about 29214.9554167040. The cubic root of 853513620 is about 948.5716744559.

Adding to 853513620 its reverse (26315358), we get a palindrome (879828978).

It can be divided in two parts, 8535 and 13620, that added together give a triangular number (22155 = T₂₁₀).

The spelling of 853513620 in words is "eight hundred fifty-three million, five hundred thirteen thousand, six hundred twenty".