11777945 has 8 divisors (see below), whose sum is σ = 14152320. Its totient is φ = 9409840.

The previous prime is 11777921. The next prime is 11777959. The reversal of 11777945 is 54977711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11777945 - 2¹² = 11773849 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5360 + ... + 7230.

It is an arithmetic number, because the mean of its divisors is an integer number (1769040).

Almost surely, 2^11777945 is an apocalyptic number.

It is an amenable number.

11777945 is a deficient number, since it is larger than the sum of its proper divisors (2374375).

11777945 is a wasteful number, since it uses less digits than its factorization.

11777945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3135.

The product of its digits is 61740, while the sum is 41.

The square root of 11777945 is about 3431.9010766629. The cubic root of 11777945 is about 227.5218833355.

The spelling of 11777945 in words is "eleven million, seven hundred seventy-seven thousand, nine hundred forty-five".