1606063521 has 16 divisors (see below), whose sum is σ = 2309106240. Its totient is φ = 989614080.

The previous prime is 1606063513. The next prime is 1606063553. The reversal of 1606063521 is 1253606061.

It is not a de Polignac number, because 1606063521 - 2³ = 1606063513 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1606063621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 341280 + ... + 345953.

It is an arithmetic number, because the mean of its divisors is an integer number (144319140).

Almost surely, 2^1606063521 is an apocalyptic number.

It is an amenable number.

1606063521 is a deficient number, since it is larger than the sum of its proper divisors (703042719).

1606063521 is a wasteful number, since it uses less digits than its factorization.

1606063521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687296.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 1606063521 is about 40075.7223390920. The cubic root of 1606063521 is about 1171.0827197071.

Adding to 1606063521 its reverse (1253606061), we get a palindrome (2859669582).

The spelling of 1606063521 in words is "one billion, six hundred six million, sixty-three thousand, five hundred twenty-one".