1606516597 has 12 divisors (see below), whose sum is σ = 1869542316. Its totient is φ = 1376471040.

The previous prime is 1606516591. The next prime is 1606516601. The reversal of 1606516597 is 7956156061.

It can be written as a sum of positive squares in 2 ways, for example, as 1037741796 + 568774801 = 32214^2 + 23849^2 .

It is not a de Polignac number, because 1606516597 - 2¹¹ = 1606514549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606516591) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 164853 + ... + 174325.

It is an arithmetic number, because the mean of its divisors is an integer number (155795193).

Almost surely, 2^1606516597 is an apocalyptic number.

It is an amenable number.

1606516597 is a deficient number, since it is larger than the sum of its proper divisors (263025719).

1606516597 is an equidigital number, since it uses as much as digits as its factorization.

1606516597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12948 (or 12941 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 46.

The square root of 1606516597 is about 40081.3746894989. The cubic root of 1606516597 is about 1171.1928314973.

The spelling of 1606516597 in words is "one billion, six hundred six million, five hundred sixteen thousand, five hundred ninety-seven".