652840843 has 4 divisors (see below), whose sum is σ = 652892320. Its totient is φ = 652789368.

The previous prime is 652840829. The next prime is 652840847. The reversal of 652840843 is 348048256.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-652840843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 652840796 and 652840805.

It is not an unprimeable number, because it can be changed into a prime (652840847) 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 3 ways as a sum of consecutive naturals, for example, 8221 + ... + 37057.

It is an arithmetic number, because the mean of its divisors is an integer number (163223080).

Almost surely, 2^652840843 is an apocalyptic number.

652840843 is a deficient number, since it is larger than the sum of its proper divisors (51477).

652840843 is a wasteful number, since it uses less digits than its factorization.

652840843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51476.

The product of its (nonzero) digits is 184320, while the sum is 40.

The square root of 652840843 is about 25550.7503412326. The cubic root of 652840843 is about 867.4992452939.

The spelling of 652840843 in words is "six hundred fifty-two million, eight hundred forty thousand, eight hundred forty-three".