1616600506 has 4 divisors (see below), whose sum is σ = 2424900762. Its totient is φ = 808300252.

The previous prime is 1616600497. The next prime is 1616600509. The reversal of 1616600506 is 6050066161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1555119225 + 61481281 = 39435^2 + 7841^2 .

It is a super-2 number, since 2×1616600506² = 5226794391998912072, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1616600509) 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 as a sum of consecutive naturals, namely, 404150125 + ... + 404150128.

Almost surely, 2^1616600506 is an apocalyptic number.

1616600506 is a deficient number, since it is larger than the sum of its proper divisors (808300256).

1616600506 is an equidigital number, since it uses as much as digits as its factorization.

1616600506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808300255.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 1616600506 is about 40206.9708632720. The cubic root of 1616600506 is about 1173.6382004333.

Adding to 1616600506 its reverse (6050066161), we get a palindrome (7666666667).

The spelling of 1616600506 in words is "one billion, six hundred sixteen million, six hundred thousand, five hundred six".