669115 has 8 divisors (see below), whose sum is σ = 808848. Its totient is φ = 531360.

The previous prime is 669113. The next prime is 669121. The reversal of 669115 is 511966.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 669115 - 2¹ = 669113 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405 + ... + 1225.

It is an arithmetic number, because the mean of its divisors is an integer number (101106).

2⁶⁶⁹¹¹⁵ is an apocalyptic number.

669115 is a deficient number, since it is larger than the sum of its proper divisors (139733).

669115 is a wasteful number, since it uses less digits than its factorization.

669115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989.

The product of its digits is 1620, while the sum is 28.

The square root of 669115 is about 817.9944987590. The cubic root of 669115 is about 87.4648566353.

It can be divided in two parts, 669 and 115, that added together give a square (784 = 28²).

The spelling of 669115 in words is "six hundred sixty-nine thousand, one hundred fifteen".