10202609 has 6 divisors (see below), whose sum is σ = 10333986. Its totient is φ = 10072880.

The previous prime is 10202603. The next prime is 10202611. The reversal of 10202609 is 90620201.

It can be written as a sum of positive squares in only one way, i.e., 8439025 + 1763584 = 2905^2 + 1328^2 .

It is a de Polignac number, because none of the positive numbers 2^k-10202609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10202603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6149 + ... + 7629.

It is an arithmetic number, because the mean of its divisors is an integer number (1722331).

Almost surely, 2^10202609 is an apocalyptic number.

It is an amenable number.

10202609 is a deficient number, since it is larger than the sum of its proper divisors (131377).

10202609 is an frugal number, since it uses more digits than its factorization.

10202609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647 (or 1564 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 10202609 is about 3194.1523132124. The cubic root of 10202609 is about 216.8887776213. Note that the first 3 decimals are identical.

The spelling of 10202609 in words is "ten million, two hundred two thousand, six hundred nine".