10690209 has 6 divisors (see below), whose sum is σ = 15441426. Its totient is φ = 7126800.

The previous prime is 10690181. The next prime is 10690213. The reversal of 10690209 is 90209601.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8573184 + 2117025 = 2928^2 + 1455^2 .

It is not a de Polignac number, because 10690209 - 2⁵ = 10690177 is a prime.

It is a super-2 number, since 2×10690209² = 228561136927362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10690249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 593892 + ... + 593909.

It is an arithmetic number, because the mean of its divisors is an integer number (2573571).

Almost surely, 2^10690209 is an apocalyptic number.

It is an amenable number.

10690209 is a deficient number, since it is larger than the sum of its proper divisors (4751217).

10690209 is a wasteful number, since it uses less digits than its factorization.

10690209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187807 (or 1187804 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 10690209 is about 3269.5885062191. The cubic root of 10690209 is about 220.2903123272.

The spelling of 10690209 in words is "ten million, six hundred ninety thousand, two hundred nine".