1660606 has 8 divisors (see below), whose sum is σ = 2496960. Its totient is φ = 828288.

The previous prime is 1660601. The next prime is 1660609. The reversal of 1660606 is 6060661.

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

It is a super-2 number, since 2×1660606² = 5515224574472, which contains 22 as substring.

1660606 is a modest number, since divided by 606 gives 166 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660601) 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 in 3 ways as a sum of consecutive naturals, for example, 435 + ... + 1873.

It is an arithmetic number, because the mean of its divisors is an integer number (312120).

2^1660606 is an apocalyptic number.

1660606 is a deficient number, since it is larger than the sum of its proper divisors (836354).

1660606 is a wasteful number, since it uses less digits than its factorization.

1660606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1660606 is about 1288.6450248226. The cubic root of 1660606 is about 118.4192212981.

The spelling of 1660606 in words is "one million, six hundred sixty thousand, six hundred six".