669159 has 12 divisors (see below), whose sum is σ = 975000. Its totient is φ = 442224.

The previous prime is 669133. The next prime is 669167. The reversal of 669159 is 951966.

It is not a de Polignac number, because 669159 - 2⁵ = 669127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1092 + ... + 1590.

It is an arithmetic number, because the mean of its divisors is an integer number (81250).

2⁶⁶⁹¹⁵⁹ is an apocalyptic number.

669159 is a deficient number, since it is larger than the sum of its proper divisors (305841).

669159 is a wasteful number, since it uses less digits than its factorization.

669159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654 (or 651 counting only the distinct ones).

The product of its digits is 14580, while the sum is 36.

The square root of 669159 is about 818.0213933633. The cubic root of 669159 is about 87.4667737792.

It can be divided in two parts, 669 and 159, that added together give a palindrome (828).

The spelling of 669159 in words is "six hundred sixty-nine thousand, one hundred fifty-nine".