11669859 has 16 divisors (see below), whose sum is σ = 17549440. Its totient is φ = 7662600.

The previous prime is 11669851. The next prime is 11669869. The reversal of 11669859 is 95896611.

It is not a de Polignac number, because 11669859 - 2³ = 11669851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11669851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1417 + ... + 5034.

It is an arithmetic number, because the mean of its divisors is an integer number (1096840).

Almost surely, 2^11669859 is an apocalyptic number.

11669859 is a deficient number, since it is larger than the sum of its proper divisors (5879581).

11669859 is an equidigital number, since it uses as much as digits as its factorization.

11669859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6527 (or 6521 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 11669859 is about 3416.1175331068. The cubic root of 11669859 is about 226.8237552453.

It can be divided in two parts, 1166 and 9859, that added together give a square (11025 = 105²).

The spelling of 11669859 in words is "eleven million, six hundred sixty-nine thousand, eight hundred fifty-nine".