10661099 has 4 divisors (see below), whose sum is σ = 10732800. Its totient is φ = 10589400.

The previous prime is 10661089. The next prime is 10661111. The reversal of 10661099 is 99016601.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10661099 - 2²⁰ = 9612523 is a prime.

It is a super-2 number, since 2×10661099² = 227318063775602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10661039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35627 + ... + 35924.

It is an arithmetic number, because the mean of its divisors is an integer number (2683200).

Almost surely, 2^10661099 is an apocalyptic number.

10661099 is a deficient number, since it is larger than the sum of its proper divisors (71701).

10661099 is an equidigital number, since it uses as much as digits as its factorization.

10661099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71700.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 10661099 is about 3265.1338410546. The cubic root of 10661099 is about 220.0901765308.

The spelling of 10661099 in words is "ten million, six hundred sixty-one thousand, ninety-nine".