1669061 has 2 divisors, whose sum is σ = 1669062. Its totient is φ = 1669060.

The previous prime is 1669049. The next prime is 1669091. The reversal of 1669061 is 1609661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1366561 + 302500 = 1169^2 + 550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1669061 is a prime.

It is a Chen prime.

It is equal to p₁₂₅₉₇₅ and since 1669061 and 125975 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1669091) 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 as a sum of consecutive naturals, namely, 834530 + 834531.

It is an arithmetic number, because the mean of its divisors is an integer number (834531).

2^1669061 is an apocalyptic number.

It is an amenable number.

1669061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1669061 is an equidigital number, since it uses as much as digits as its factorization.

1669061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 1669061 is about 1291.9214372399. The cubic root of 1669061 is about 118.6198589046.

The spelling of 1669061 in words is "one million, six hundred sixty-nine thousand, sixty-one".