11641761 has 6 divisors (see below), whose sum is σ = 16815890. Its totient is φ = 7761168.

The previous prime is 11641757. The next prime is 11641783. The reversal of 11641761 is 16714611.

11641761 is a `hidden beast` number, since 11 + 641 + 7 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11350161 + 291600 = 3369^2 + 540^2 .

It is not a de Polignac number, because 11641761 - 2² = 11641757 is a prime.

It is a super-2 number, since 2×11641761² = 271061198362242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11641711) 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 5 ways as a sum of consecutive naturals, for example, 646756 + ... + 646773.

Almost surely, 2^11641761 is an apocalyptic number.

It is an amenable number.

11641761 is a deficient number, since it is larger than the sum of its proper divisors (5174129).

11641761 is a wasteful number, since it uses less digits than its factorization.

11641761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293535 (or 1293532 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 11641761 is about 3412.0024912066. The cubic root of 11641761 is about 226.6415646462.

The spelling of 11641761 in words is "eleven million, six hundred forty-one thousand, seven hundred sixty-one".