255663342 has 24 divisors (see below), whose sum is σ = 604295640. Its totient is φ = 77473680.

The previous prime is 255663271. The next prime is 255663347. The reversal of 255663342 is 243366552.

255663342 is a `hidden beast` number, since 2 + 556 + 63 + 3 + 42 = 666.

It is a super-3 number, since 3×255663342³ (a number of 26 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 255663297 and 255663306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255663347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 645417 + ... + 645812.

It is an arithmetic number, because the mean of its divisors is an integer number (25178985).

Almost surely, 2^255663342 is an apocalyptic number.

255663342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

255663342 is an abundant number, since it is smaller than the sum of its proper divisors (348632298).

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

255663342 is a wasteful number, since it uses less digits than its factorization.

255663342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291248 (or 1291245 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

The square root of 255663342 is about 15989.4759764040. The cubic root of 255663342 is about 634.6819594865.

The spelling of 255663342 in words is "two hundred fifty-five million, six hundred sixty-three thousand, three hundred forty-two".