10661823 has 12 divisors (see below), whose sum is σ = 15480400. Its totient is φ = 7070976.

The previous prime is 10661813. The next prime is 10661843. The reversal of 10661823 is 32816601.

It is not a de Polignac number, because 10661823 - 2⁹ = 10661311 is a prime.

It is a super-2 number, since 2×10661823² = 227348939366658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10661813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1186 + ... + 4767.

Almost surely, 2^10661823 is an apocalyptic number.

10661823 is a deficient number, since it is larger than the sum of its proper divisors (4818577).

10661823 is a wasteful number, since it uses less digits than its factorization.

10661823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6158 (or 6155 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 10661823 is about 3265.2447075219. The cubic root of 10661823 is about 220.0951585588.

The spelling of 10661823 in words is "ten million, six hundred sixty-one thousand, eight hundred twenty-three".