1659006 has 48 divisors (see below), whose sum is σ = 3841344. Its totient is φ = 516672.

The previous prime is 1658999. The next prime is 1659011. The reversal of 1659006 is 6009561.

1659006 is a `hidden beast` number, since 1 + 659 + 0 + 0 + 6 = 666.

It is a Curzon number.

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 23 ways as a sum of consecutive naturals, for example, 31276 + ... + 31328.

It is an arithmetic number, because the mean of its divisors is an integer number (80028).

2^1659006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1659006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1920672).

1659006 is an abundant number, since it is smaller than the sum of its proper divisors (2182338).

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

1659006 is a wasteful number, since it uses less digits than its factorization.

1659006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 1659006 is about 1288.0240680981. The cubic root of 1659006 is about 118.3811766247.

The spelling of 1659006 in words is "one million, six hundred fifty-nine thousand, six".