665141875 has 20 divisors (see below), whose sum is σ = 836388520. Its totient is φ = 528768000.

The previous prime is 665141861. The next prime is 665141879. The reversal of 665141875 is 578141566.

665141875 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 665141875 - 2²⁵ = 631587443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (665141879) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 98611 + ... + 105139.

It is an arithmetic number, because the mean of its divisors is an integer number (41819426).

Almost surely, 2^665141875 is an apocalyptic number.

665141875 is a deficient number, since it is larger than the sum of its proper divisors (171246645).

665141875 is an equidigital number, since it uses as much as digits as its factorization.

665141875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6712 (or 6697 counting only the distinct ones).

The product of its digits is 201600, while the sum is 43.

The square root of 665141875 is about 25790.3446080117. The cubic root of 665141875 is about 872.9139422173.

The spelling of 665141875 in words is "six hundred sixty-five million, one hundred forty-one thousand, eight hundred seventy-five".