1669424 has 20 divisors (see below), whose sum is σ = 3269136. Its totient is φ = 825792.

The previous prime is 1669399. The next prime is 1669427. The reversal of 1669424 is 4249661.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1669427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1142 + ... + 2154.

2^1669424 is an apocalyptic number.

It is an amenable number.

1669424 is a deficient number, since it is larger than the sum of its proper divisors (1599712).

1669424 is a wasteful number, since it uses less digits than its factorization.

1669424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124 (or 1118 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 1669424 is about 1292.0619180210. The cubic root of 1669424 is about 118.6284577290.

The spelling of 1669424 in words is "one million, six hundred sixty-nine thousand, four hundred twenty-four".