10618609 has 4 divisors (see below), whose sum is σ = 10625140. Its totient is φ = 10612080.

The previous prime is 10618589. The next prime is 10618633. The reversal of 10618609 is 90681601.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5049009 + 5569600 = 2247^2 + 2360^2 .

It is a cyclic number.

It is not a de Polignac number, because 10618609 - 2⁵ = 10618577 is a prime.

It is a super-2 number, since 2×10618609² = 225509714189762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10618639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1327 + ... + 4795.

It is an arithmetic number, because the mean of its divisors is an integer number (2656285).

Almost surely, 2^10618609 is an apocalyptic number.

It is an amenable number.

10618609 is a deficient number, since it is larger than the sum of its proper divisors (6531).

10618609 is an equidigital number, since it uses as much as digits as its factorization.

10618609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6530.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 10618609 is about 3258.6207204890. The cubic root of 10618609 is about 219.7973961186.

The spelling of 10618609 in words is "ten million, six hundred eighteen thousand, six hundred nine".