11375681 has 2 divisors, whose sum is σ = 11375682. Its totient is φ = 11375680.

The previous prime is 11375677. The next prime is 11375711. The reversal of 11375681 is 18657311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7612081 + 3763600 = 2759^2 + 1940^2 .

It is a cyclic number.

It is not a de Polignac number, because 11375681 - 2² = 11375677 is a prime.

It is a super-2 number, since 2×11375681² = 258812236427522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11375981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5687840 + 5687841.

It is an arithmetic number, because the mean of its divisors is an integer number (5687841).

Almost surely, 2^11375681 is an apocalyptic number.

It is an amenable number.

11375681 is a deficient number, since it is larger than the sum of its proper divisors (1).

11375681 is an equidigital number, since it uses as much as digits as its factorization.

11375681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 32.

The square root of 11375681 is about 3372.7853474539. The cubic root of 11375681 is about 224.9015602301.

The spelling of 11375681 in words is "eleven million, three hundred seventy-five thousand, six hundred eighty-one".