255568620 has 192 divisors, whose sum is σ = 793658880. Its totient is φ = 61212672.

The previous prime is 255568603. The next prime is 255568627. The reversal of 255568620 is 26865552.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (255568627) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3079099 + ... + 3079181.

It is an arithmetic number, because the mean of its divisors is an integer number (4133640).

Almost surely, 2^255568620 is an apocalyptic number.

255568620 is a gapful number since it is divisible by the number (20) 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 255568620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (396829440).

255568620 is an abundant number, since it is smaller than the sum of its proper divisors (538090260).

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

255568620 is a wasteful number, since it uses less digits than its factorization.

255568620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 39.

The square root of 255568620 is about 15986.5136912336. The cubic root of 255568620 is about 634.6035676319.

The spelling of 255568620 in words is "two hundred fifty-five million, five hundred sixty-eight thousand, six hundred twenty".