10665949 has 4 divisors (see below), whose sum is σ = 12189664. Its totient is φ = 9142236.

The previous prime is 10665943. The next prime is 10665971. The reversal of 10665949 is 94956601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94956601 = 1627 ⋅58363.

It is a cyclic number.

It is not a de Polignac number, because 10665949 - 2⁹ = 10665437 is a prime.

It is a super-2 number, since 2×10665949² = 227524936141202, 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 (10665943) 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, 761847 + ... + 761860.

It is an arithmetic number, because the mean of its divisors is an integer number (3047416).

Almost surely, 2^10665949 is an apocalyptic number.

It is an amenable number.

10665949 is a deficient number, since it is larger than the sum of its proper divisors (1523715).

10665949 is an equidigital number, since it uses as much as digits as its factorization.

10665949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523714.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 10665949 is about 3265.8764520416. The cubic root of 10665949 is about 220.1235463091.

The spelling of 10665949 in words is "ten million, six hundred sixty-five thousand, nine hundred forty-nine".