665162875 has 72 divisors (see below), whose sum is σ = 964008864. Its totient is φ = 457142400.

The previous prime is 665162833. The next prime is 665162947. The reversal of 665162875 is 578261566.

It is not a de Polignac number, because 665162875 - 2¹³ = 665154683 is a prime.

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 71 ways as a sum of consecutive naturals, for example, 17977357 + ... + 17977393.

It is an arithmetic number, because the mean of its divisors is an integer number (13389012).

Almost surely, 2^665162875 is an apocalyptic number.

665162875 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

665162875 is a deficient number, since it is larger than the sum of its proper divisors (298845989).

665162875 is a wasteful number, since it uses less digits than its factorization.

665162875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 78 counting only the distinct ones).

The product of its digits is 604800, while the sum is 46.

The square root of 665162875 is about 25790.7517339065. The cubic root of 665162875 is about 872.9231287285.

The spelling of 665162875 in words is "six hundred sixty-five million, one hundred sixty-two thousand, eight hundred seventy-five".