11608821 has 24 divisors (see below), whose sum is σ = 19360640. Its totient is φ = 6565536.

The previous prime is 11608811. The next prime is 11608837. The reversal of 11608821 is 12880611.

11608821 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11608821 - 2¹¹ = 11606773 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 (11608811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5595 + ... + 7383.

Almost surely, 2^11608821 is an apocalyptic number.

It is an amenable number.

11608821 is a deficient number, since it is larger than the sum of its proper divisors (7751819).

11608821 is a wasteful number, since it uses less digits than its factorization.

11608821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905 (or 1902 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 11608821 is about 3407.1719944846. The cubic root of 11608821 is about 226.4276043060.

The spelling of 11608821 in words is "eleven million, six hundred eight thousand, eight hundred twenty-one".