11641641 has 16 divisors (see below), whose sum is σ = 17031168. Its totient is φ = 7014800.

The previous prime is 11641639. The next prime is 11641681. The reversal of 11641641 is 14614611.

It is a cyclic number.

It is not a de Polignac number, because 11641641 - 2¹ = 11641639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11641621) 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 15 ways as a sum of consecutive naturals, for example, 5380 + ... + 7226.

It is an arithmetic number, because the mean of its divisors is an integer number (1064448).

Almost surely, 2^11641641 is an apocalyptic number.

11641641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11641641 is a deficient number, since it is larger than the sum of its proper divisors (5389527).

11641641 is a wasteful number, since it uses less digits than its factorization.

11641641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052.

The product of its digits is 576, while the sum is 24.

The square root of 11641641 is about 3411.9849061800. The cubic root of 11641641 is about 226.6407859243.

The spelling of 11641641 in words is "eleven million, six hundred forty-one thousand, six hundred forty-one".