665342475 has 48 divisors (see below), whose sum is σ = 1323367680. Its totient is φ = 288144000.

The previous prime is 665342467. The next prime is 665342521. The reversal of 665342475 is 574243566.

It is not a de Polignac number, because 665342475 - 2³ = 665342467 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23376 + ... + 43325.

It is an arithmetic number, because the mean of its divisors is an integer number (27570160).

Almost surely, 2^665342475 is an apocalyptic number.

665342475 is a deficient number, since it is larger than the sum of its proper divisors (658025205).

665342475 is a wasteful number, since it uses less digits than its factorization.

665342475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66740 (or 66735 counting only the distinct ones).

The product of its digits is 604800, while the sum is 42.

The square root of 665342475 is about 25794.2333671695. The cubic root of 665342475 is about 873.0016873751.

The spelling of 665342475 in words is "six hundred sixty-five million, three hundred forty-two thousand, four hundred seventy-five".