11713887 has 6 divisors (see below), whose sum is σ = 16920072. Its totient is φ = 7809252.

The previous prime is 11713859. The next prime is 11713907. The reversal of 11713887 is 78831711.

It is not a de Polignac number, because 11713887 - 2¹⁰ = 11712863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11713687) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 650763 + ... + 650780.

It is an arithmetic number, because the mean of its divisors is an integer number (2820012).

Almost surely, 2^11713887 is an apocalyptic number.

11713887 is a deficient number, since it is larger than the sum of its proper divisors (5206185).

11713887 is a wasteful number, since it uses less digits than its factorization.

11713887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301549 (or 1301546 counting only the distinct ones).

The product of its digits is 9408, while the sum is 36.

The square root of 11713887 is about 3422.5556240914. Note that the first 3 decimals coincide. The cubic root of 11713887 is about 227.1086505305.

The spelling of 11713887 in words is "eleven million, seven hundred thirteen thousand, eight hundred eighty-seven".