11387671 has 4 divisors (see below), whose sum is σ = 12057552. Its totient is φ = 10717792.

The previous prime is 11387617. The next prime is 11387687. The reversal of 11387671 is 17678311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17678311 = 7 ⋅2525473.

It is a cyclic number.

It is not a de Polignac number, because 11387671 - 2¹¹ = 11385623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11387171) 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 3 ways as a sum of consecutive naturals, for example, 334915 + ... + 334948.

It is an arithmetic number, because the mean of its divisors is an integer number (3014388).

Almost surely, 2^11387671 is an apocalyptic number.

11387671 is a deficient number, since it is larger than the sum of its proper divisors (669881).

11387671 is an equidigital number, since it uses as much as digits as its factorization.

11387671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669880.

The product of its digits is 7056, while the sum is 34.

The square root of 11387671 is about 3374.5623419934. The cubic root of 11387671 is about 224.9805481126.

The spelling of 11387671 in words is "eleven million, three hundred eighty-seven thousand, six hundred seventy-one".