1606612005 has 24 divisors (see below), whose sum is σ = 2793772800. Its totient is φ = 854097120.

The previous prime is 1606612003. The next prime is 1606612009. The reversal of 1606612005 is 5002166061.

It is a happy number.

It is not a de Polignac number, because 1606612005 - 2¹ = 1606612003 is a prime.

It is a super-2 number, since 2×1606612005² = 5162404269220240050, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1606612005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606612003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43405 + ... + 71394.

It is an arithmetic number, because the mean of its divisors is an integer number (116407200).

Almost surely, 2^1606612005 is an apocalyptic number.

1606612005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1606612005 is a deficient number, since it is larger than the sum of its proper divisors (1187160795).

1606612005 is a wasteful number, since it uses less digits than its factorization.

1606612005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115121 (or 115118 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1606612005 is about 40082.5648505681. The cubic root of 1606612005 is about 1171.2160160184.

Adding to 1606612005 its reverse (5002166061), we get a palindrome (6608778066).

The spelling of 1606612005 in words is "one billion, six hundred six million, six hundred twelve thousand, five".