1606869684 has 96 divisors (see below), whose sum is σ = 4767660800. Its totient is φ = 458472960.

The previous prime is 1606869647. The next prime is 1606869713. The reversal of 1606869684 is 4869686061.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1606869684.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 997872 + ... + 999480.

Almost surely, 2^1606869684 is an apocalyptic number.

1606869684 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1606869684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2383830400).

1606869684 is an abundant number, since it is smaller than the sum of its proper divisors (3160791116).

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

1606869684 is a wasteful number, since it uses less digits than its factorization.

1606869684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2950 (or 2942 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The square root of 1606869684 is about 40085.7790743800. The cubic root of 1606869684 is about 1171.2786284470.

The spelling of 1606869684 in words is "one billion, six hundred six million, eight hundred sixty-nine thousand, six hundred eighty-four".