618797856 has 24 divisors (see below), whose sum is σ = 1624344624. Its totient is φ = 206265920.

The previous prime is 618797791. The next prime is 618797857. The reversal of 618797856 is 658797816.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 618797796 and 618797805.

It is not an unprimeable number, because it can be changed into a prime (618797857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3222810 + ... + 3223001.

It is an arithmetic number, because the mean of its divisors is an integer number (67681026).

Almost surely, 2^618797856 is an apocalyptic number.

It is an amenable number.

618797856 is an abundant number, since it is smaller than the sum of its proper divisors (1005546768).

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

618797856 is a wasteful number, since it uses less digits than its factorization.

618797856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6445824 (or 6445816 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 57.

The square root of 618797856 is about 24875.6478508601. The cubic root of 618797856 is about 852.1504285955.

The spelling of 618797856 in words is "six hundred eighteen million, seven hundred ninety-seven thousand, eight hundred fifty-six".