655685316 has 144 divisors (see below), whose sum is σ = 1977288768. Its totient is φ = 180576000.

The previous prime is 655685221. The next prime is 655685323. The reversal of 655685316 is 613586556.

655685316 is a `hidden beast` number, since 6 + 55 + 68 + 531 + 6 = 666.

655685316 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 343966 + ... + 345866.

It is an arithmetic number, because the mean of its divisors is an integer number (13731172).

Almost surely, 2^655685316 is an apocalyptic number.

655685316 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655685316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (988644384).

655685316 is an abundant number, since it is smaller than the sum of its proper divisors (1321603452).

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

655685316 is a wasteful number, since it uses less digits than its factorization.

655685316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002 (or 1997 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The square root of 655685316 is about 25606.3530398220. The cubic root of 655685316 is about 868.7573380606.

The spelling of 655685316 in words is "six hundred fifty-five million, six hundred eighty-five thousand, three hundred sixteen".