1606606505 has 16 divisors (see below), whose sum is σ = 2332955520. Its totient is φ = 1036868352.

The previous prime is 1606606483. The next prime is 1606606513. The reversal of 1606606505 is 5056066061.

It is not a de Polignac number, because 1606606505 - 2⁸ = 1606606249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1349495 + ... + 1350684.

It is an arithmetic number, because the mean of its divisors is an integer number (145809720).

Almost surely, 2^1606606505 is an apocalyptic number.

It is an amenable number.

1606606505 is a deficient number, since it is larger than the sum of its proper divisors (726349015).

1606606505 is a wasteful number, since it uses less digits than its factorization.

1606606505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2700208.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 1606606505 is about 40082.4962421254. The cubic root of 1606606505 is about 1171.2146795216.

The spelling of 1606606505 in words is "one billion, six hundred six million, six hundred six thousand, five hundred five".