8616820393 has 4 divisors (see below), whose sum is σ = 8620494160. Its totient is φ = 8613146628.

The previous prime is 8616820361. The next prime is 8616820417. The reversal of 8616820393 is 3930286168.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8616820393 - 2⁵ = 8616820361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8616820343) 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, 1833363 + ... + 1838056.

It is an arithmetic number, because the mean of its divisors is an integer number (2155123540).

Almost surely, 2^8616820393 is an apocalyptic number.

It is an amenable number.

8616820393 is a deficient number, since it is larger than the sum of its proper divisors (3673767).

8616820393 is a wasteful number, since it uses less digits than its factorization.

8616820393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673766.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 8616820393 is about 92826.8301354732. The cubic root of 8616820393 is about 2050.1344661351.

The spelling of 8616820393 in words is "eight billion, six hundred sixteen million, eight hundred twenty thousand, three hundred ninety-three".