11945761 has 4 divisors (see below), whose sum is σ = 12025024. Its totient is φ = 11866500.

The previous prime is 11945753. The next prime is 11945797. The reversal of 11945761 is 16754911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11945761 - 2³ = 11945753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11945711) 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 3 ways as a sum of consecutive naturals, for example, 39405 + ... + 39706.

It is an arithmetic number, because the mean of its divisors is an integer number (3006256).

Almost surely, 2^11945761 is an apocalyptic number.

It is an amenable number.

11945761 is a deficient number, since it is larger than the sum of its proper divisors (79263).

11945761 is an equidigital number, since it uses as much as digits as its factorization.

11945761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79262.

The product of its digits is 7560, while the sum is 34.

The square root of 11945761 is about 3456.2640234797. The cubic root of 11945761 is about 228.5973933116.

The spelling of 11945761 in words is "eleven million, nine hundred forty-five thousand, seven hundred sixty-one".