1669056 has 28 divisors (see below), whose sum is σ = 4416552. Its totient is φ = 556288.

The previous prime is 1669049. The next prime is 1669061. The reversal of 1669056 is 6509661.

It is a super-2 number, since 2×1669056² = 5571495862272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4155 + ... + 4538.

It is an arithmetic number, because the mean of its divisors is an integer number (157734).

2^1669056 is an apocalyptic number.

1669056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1669056 is an abundant number, since it is smaller than the sum of its proper divisors (2747496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1669056 is an equidigital number, since it uses as much as digits as its factorization.

1669056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8708 (or 8698 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 1669056 is about 1291.9195021363. The cubic root of 1669056 is about 118.6197404548.

The spelling of 1669056 in words is "one million, six hundred sixty-nine thousand, fifty-six".