1660841 has 8 divisors (see below), whose sum is σ = 2044224. Its totient is φ = 1314000.

The previous prime is 1660837. The next prime is 1660843. The reversal of 1660841 is 1480661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1660841 - 2² = 1660837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1660841.

It is not an unprimeable number, because it can be changed into a prime (1660843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9035 + ... + 9216.

It is an arithmetic number, because the mean of its divisors is an integer number (255528).

2^1660841 is an apocalyptic number.

It is an amenable number.

1660841 is a deficient number, since it is larger than the sum of its proper divisors (383383).

1660841 is a wasteful number, since it uses less digits than its factorization.

1660841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18271.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1660841 is about 1288.7362026420. The cubic root of 1660841 is about 118.4248070510.

The spelling of 1660841 in words is "one million, six hundred sixty thousand, eight hundred forty-one".