1662816606 has 48 divisors (see below), whose sum is σ = 3668393232. Its totient is φ = 502099840.

The previous prime is 1662816599. The next prime is 1662816613. The reversal of 1662816606 is 6066182661.

It is an interprime number because it is at equal distance from previous prime (1662816599) and next prime (1662816613).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 208810 + ... + 216626.

It is an arithmetic number, because the mean of its divisors is an integer number (76424859).

Almost surely, 2^1662816606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1662816606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1834196616).

1662816606 is an abundant number, since it is smaller than the sum of its proper divisors (2005576626).

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

1662816606 is a wasteful number, since it uses less digits than its factorization.

1662816606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8137 (or 8126 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 1662816606 is about 40777.6483627980. The cubic root of 1662816606 is about 1184.7174472765.

The spelling of 1662816606 in words is "one billion, six hundred sixty-two million, eight hundred sixteen thousand, six hundred six".