11669551 has 8 divisors (see below), whose sum is σ = 12015360. Its totient is φ = 11328792.

The previous prime is 11669519. The next prime is 11669557. The reversal of 11669551 is 15596611.

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 11669551 - 2⁵ = 11669519 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11669557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3706 + ... + 6088.

It is an arithmetic number, because the mean of its divisors is an integer number (1501920).

Almost surely, 2^11669551 is an apocalyptic number.

11669551 is a deficient number, since it is larger than the sum of its proper divisors (345809).

11669551 is an equidigital number, since it uses as much as digits as its factorization.

11669551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525.

The product of its digits is 8100, while the sum is 34.

The square root of 11669551 is about 3416.0724523932. The cubic root of 11669551 is about 226.8217597247.

The spelling of 11669551 in words is "eleven million, six hundred sixty-nine thousand, five hundred fifty-one".