11671659 has 24 divisors (see below), whose sum is σ = 17606160. Its totient is φ = 7441728.

The previous prime is 11671637. The next prime is 11671663. The reversal of 11671659 is 95617611.

11671659 = T₂₄₁ + T₂₄₂ + ... + T₄₃₇.

It is a happy number.

It is not a de Polignac number, because 11671659 - 2⁹ = 11671147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11671609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51304 + ... + 51530.

It is an arithmetic number, because the mean of its divisors is an integer number (733590).

Almost surely, 2^11671659 is an apocalyptic number.

11671659 is a deficient number, since it is larger than the sum of its proper divisors (5934501).

11671659 is a wasteful number, since it uses less digits than its factorization.

11671659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459 (or 456 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 11671659 is about 3416.3809799260. The cubic root of 11671659 is about 226.8354166764.

The spelling of 11671659 in words is "eleven million, six hundred seventy-one thousand, six hundred fifty-nine".