1606703004 has 72 divisors (see below), whose sum is σ = 4290271440. Its totient is φ = 505585152.

The previous prime is 1606702969. The next prime is 1606703009. The reversal of 1606703004 is 4003076061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606703009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196404 + ... + 204420.

Almost surely, 2^1606703004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1606703004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2145135720).

1606703004 is an abundant number, since it is smaller than the sum of its proper divisors (2683568436).

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

1606703004 is a wasteful number, since it uses less digits than its factorization.

1606703004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8339 (or 8334 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 1606703004 is about 40083.6999789191. The cubic root of 1606703004 is about 1171.2381282798.

Adding to 1606703004 its reverse (4003076061), we get a palindrome (5609779065).

The spelling of 1606703004 in words is "one billion, six hundred six million, seven hundred three thousand, four".