11727977 has 8 divisors (see below), whose sum is σ = 12846600. Its totient is φ = 10657024.

The previous prime is 11727971. The next prime is 11728007. The reversal of 11727977 is 77972711.

It can be written as a sum of positive squares in 4 ways, for example, as 1590121 + 10137856 = 1261^2 + 3184^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11727977 - 2⁶ = 11727913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11727971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11402 + ... + 12387.

It is an arithmetic number, because the mean of its divisors is an integer number (1605825).

Almost surely, 2^11727977 is an apocalyptic number.

11727977 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

11727977 is a deficient number, since it is larger than the sum of its proper divisors (1118623).

11727977 is a wasteful number, since it uses less digits than its factorization.

11727977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23835.

The product of its digits is 43218, while the sum is 41.

The square root of 11727977 is about 3424.6134088390. The cubic root of 11727977 is about 227.1996729418.

The spelling of 11727977 in words is "eleven million, seven hundred twenty-seven thousand, nine hundred seventy-seven".