10949661 has 10 divisors (see below), whose sum is σ = 16357022. Its totient is φ = 7299720.

The previous prime is 10949639. The next prime is 10949663. The reversal of 10949661 is 16694901.

10949661 is a `hidden beast` number, since 109 + 496 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10850436 + 99225 = 3294^2 + 315^2 .

It is not a de Polignac number, because 10949661 - 2⁵ = 10949629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10949663) 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 9 ways as a sum of consecutive naturals, for example, 67510 + ... + 67671.

Almost surely, 2^10949661 is an apocalyptic number.

It is an amenable number.

10949661 is a deficient number, since it is larger than the sum of its proper divisors (5407361).

10949661 is an equidigital number, since it uses as much as digits as its factorization.

10949661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135193 (or 135184 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 10949661 is about 3309.0271984376. The cubic root of 10949661 is about 222.0582389206.

It can be divided in two parts, 109 and 49661, that added together give a triangular number (49770 = T₃₁₅).

The spelling of 10949661 in words is "ten million, nine hundred forty-nine thousand, six hundred sixty-one".