669627 has 20 divisors (see below), whose sum is σ = 1144176. Its totient is φ = 382320.

The previous prime is 669611. The next prime is 669637. The reversal of 669627 is 726966.

It is not a de Polignac number, because 669627 - 2⁴ = 669611 is a prime.

669627 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 669591 and 669600.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 669627.

It is not an unprimeable number, because it can be changed into a prime (669607) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 24 + ... + 1157.

2⁶⁶⁹⁶²⁷ is an apocalyptic number.

669627 is a deficient number, since it is larger than the sum of its proper divisors (474549).

669627 is a wasteful number, since it uses less digits than its factorization.

669627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200 (or 1191 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 669627 is about 818.3073994533. The cubic root of 669627 is about 87.4871600207.

Subtracting from 669627 its product of digits (27216), we obtain a triangular number (642411 = T₁₁₃₃).

It can be divided in two parts, 669 and 627, that added together give a 4-th power (1296 = 6⁴).

The spelling of 669627 in words is "six hundred sixty-nine thousand, six hundred twenty-seven".