11485681 has 2 divisors, whose sum is σ = 11485682. Its totient is φ = 11485680.

The previous prime is 11485679. The next prime is 11485697. The reversal of 11485681 is 18658411.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11451456 + 34225 = 3384^2 + 185^2 .

It is an emirp because it is prime and its reverse (18658411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11485681 - 2¹ = 11485679 is a prime.

It is a super-2 number, since 2×11485681² = 263841736067522, which contains 22 as substring.

Together with 11485679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11485631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5742840 + 5742841.

It is an arithmetic number, because the mean of its divisors is an integer number (5742841).

Almost surely, 2^11485681 is an apocalyptic number.

It is an amenable number.

11485681 is a deficient number, since it is larger than the sum of its proper divisors (1).

11485681 is an equidigital number, since it uses as much as digits as its factorization.

11485681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 34.

The square root of 11485681 is about 3389.0531125965. The cubic root of 11485681 is about 225.6241501338.

The spelling of 11485681 in words is "eleven million, four hundred eighty-five thousand, six hundred eighty-one".