11977705 has 4 divisors (see below), whose sum is σ = 14373252. Its totient is φ = 9582160.

The previous prime is 11977681. The next prime is 11977717. The reversal of 11977705 is 50777911.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2262016 + 9715689 = 1504^2 + 3117^2 .

It is not a de Polignac number, because 11977705 - 2⁹ = 11977193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1197766 + ... + 1197775.

It is an arithmetic number, because the mean of its divisors is an integer number (3593313).

Almost surely, 2^11977705 is an apocalyptic number.

It is an amenable number.

11977705 is a deficient number, since it is larger than the sum of its proper divisors (2395547).

11977705 is an equidigital number, since it uses as much as digits as its factorization.

11977705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2395546.

The product of its (nonzero) digits is 15435, while the sum is 37.

The square root of 11977705 is about 3460.8821129880. The cubic root of 11977705 is about 228.8009750333.

The spelling of 11977705 in words is "eleven million, nine hundred seventy-seven thousand, seven hundred five".