11777913 has 32 divisors (see below), whose sum is σ = 20171520. Its totient is φ = 6652800.

The previous prime is 11777903. The next prime is 11777921. The reversal of 11777913 is 31977711.

It is not a de Polignac number, because 11777913 - 2¹⁰ = 11776889 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11777903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18781 + ... + 19397.

It is an arithmetic number, because the mean of its divisors is an integer number (630360).

Almost surely, 2^11777913 is an apocalyptic number.

It is an amenable number.

11777913 is a deficient number, since it is larger than the sum of its proper divisors (8393607).

11777913 is a wasteful number, since it uses less digits than its factorization.

11777913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 728 counting only the distinct ones).

The product of its digits is 9261, while the sum is 36.

The square root of 11777913 is about 3431.8964145207. The cubic root of 11777913 is about 227.5216772807.

It can be divided in two parts, 11 and 777913, that added together give a square (777924 = 882²).

The spelling of 11777913 in words is "eleven million, seven hundred seventy-seven thousand, nine hundred thirteen".