669212875 has 16 divisors (see below), whose sum is σ = 839168928. Its totient is φ = 532812000.

The previous prime is 669212867. The next prime is 669212893. The reversal of 669212875 is 578212966.

It is not a de Polignac number, because 669212875 - 2³ = 669212867 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13689 + ... + 39061.

It is an arithmetic number, because the mean of its divisors is an integer number (52448058).

Almost surely, 2^669212875 is an apocalyptic number.

669212875 is a deficient number, since it is larger than the sum of its proper divisors (169956053).

669212875 is a wasteful number, since it uses less digits than its factorization.

669212875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25599 (or 25589 counting only the distinct ones).

The product of its digits is 362880, while the sum is 46.

The square root of 669212875 is about 25869.1490969456. The cubic root of 669212875 is about 874.6912107684.

Subtracting from 669212875 its reverse (578212966), we obtain a palindrome (90999909).

It can be divided in two parts, 66921 and 2875, that added together give a palindrome (69796).

The spelling of 669212875 in words is "six hundred sixty-nine million, two hundred twelve thousand, eight hundred seventy-five".