1659941 has 4 divisors (see below), whose sum is σ = 1664832. Its totient is φ = 1655052.

The previous prime is 1659919. The next prime is 1659971. The reversal of 1659941 is 1499561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1659941 - 2⁶ = 1659877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1659971) 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, 1895 + ... + 2628.

It is an arithmetic number, because the mean of its divisors is an integer number (416208).

2^1659941 is an apocalyptic number.

It is an amenable number.

1659941 is a deficient number, since it is larger than the sum of its proper divisors (4891).

1659941 is an equidigital number, since it uses as much as digits as its factorization.

1659941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4890.

The product of its digits is 9720, while the sum is 35.

The square root of 1659941 is about 1288.3869760286. The cubic root of 1659941 is about 118.4034119497.

Adding to 1659941 its product of digits (9720), we get a palindrome (1669661).

The spelling of 1659941 in words is "one million, six hundred fifty-nine thousand, nine hundred forty-one".