1606604650 has 36 divisors (see below), whose sum is σ = 3476173158. Its totient is φ = 550835040.

The previous prime is 1606604627. The next prime is 1606604653. The reversal of 1606604650 is 564066061.

It can be written as a sum of positive squares in 3 ways, for example, as 1352106441 + 254498209 = 36771^2 + 15953^2 .

It is not an unprimeable number, because it can be changed into a prime (1606604653) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 325429 + ... + 330328.

Almost surely, 2^1606604650 is an apocalyptic number.

1606604650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1606604650 is an abundant number, since it is smaller than the sum of its proper divisors (1869568508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1606604650 is a wasteful number, since it uses less digits than its factorization.

1606604650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655783 (or 655771 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1606604650 is about 40082.4731023424. The cubic root of 1606604650 is about 1171.2142287569.

The spelling of 1606604650 in words is "one billion, six hundred six million, six hundred four thousand, six hundred fifty".