11140661 has 12 divisors (see below), whose sum is σ = 13527648. Its totient is φ = 8985792.

The previous prime is 11140651. The next prime is 11140697. The reversal of 11140661 is 16604111.

It is not a de Polignac number, because 11140661 - 2¹⁴ = 11124277 is a prime.

It is a super-2 number, since 2×11140661² = 248228655033842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11140601) 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, 731 + ... + 4776.

It is an arithmetic number, because the mean of its divisors is an integer number (1127304).

Almost surely, 2^11140661 is an apocalyptic number.

It is an amenable number.

11140661 is a deficient number, since it is larger than the sum of its proper divisors (2386987).

11140661 is an equidigital number, since it uses as much as digits as its factorization.

11140661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5548 (or 5531 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 11140661 is about 3337.7628735427. The cubic root of 11140661 is about 223.3419582818.

Adding to 11140661 its reverse (16604111), we get a palindrome (27744772).

The spelling of 11140661 in words is "eleven million, one hundred forty thousand, six hundred sixty-one".