1606446 has 32 divisors (see below), whose sum is σ = 3628800. Its totient is φ = 526680.

The previous prime is 1606439. The next prime is 1606457. The reversal of 1606446 is 6446061.

1606446 is a `hidden beast` number, since 16 + 0 + 644 + 6 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3625 + ... + 4043.

It is an arithmetic number, because the mean of its divisors is an integer number (113400).

2^1606446 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1606446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1814400).

1606446 is an abundant number, since it is smaller than the sum of its proper divisors (2022354).

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

1606446 is a wasteful number, since it uses less digits than its factorization.

1606446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501 (or 495 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1606446 is about 1267.4565081296. The cubic root of 1606446 is about 117.1175675556.

It can be divided in two parts, 16064 and 46, that added together give a triangular number (16110 = T₁₇₉).

The spelling of 1606446 in words is "one million, six hundred six thousand, four hundred forty-six".