665335255 has 48 divisors (see below), whose sum is σ = 942084000. Its totient is φ = 449100288.

The previous prime is 665335201. The next prime is 665335289. The reversal of 665335255 is 552533566.

665335255 = T₃₆₉₅ + T₃₆₉₆ + ... + T₃₇₈₉.

It is a de Polignac number, because none of the positive numbers 2^k-665335255 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 464881 + ... + 466309.

It is an arithmetic number, because the mean of its divisors is an integer number (19626750).

Almost surely, 2^665335255 is an apocalyptic number.

665335255 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

665335255 is a deficient number, since it is larger than the sum of its proper divisors (276748745).

665335255 is a wasteful number, since it uses less digits than its factorization.

665335255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508 (or 1495 counting only the distinct ones).

The product of its digits is 405000, while the sum is 40.

The square root of 665335255 is about 25794.0934130277. The cubic root of 665335255 is about 872.9985295553.

The spelling of 665335255 in words is "six hundred sixty-five million, three hundred thirty-five thousand, two hundred fifty-five".