11608661 has 2 divisors, whose sum is σ = 11608662. Its totient is φ = 11608660.

The previous prime is 11608657. The next prime is 11608673. The reversal of 11608661 is 16680611.

11608661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11015761 + 592900 = 3319^2 + 770^2 .

It is an emirp because it is prime and its reverse (16680611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11608661 - 2² = 11608657 is a prime.

It is a super-2 number, since 2×11608661² = 269522020425842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11608651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5804330 + 5804331.

It is an arithmetic number, because the mean of its divisors is an integer number (5804331).

Almost surely, 2^11608661 is an apocalyptic number.

It is an amenable number.

11608661 is a deficient number, since it is larger than the sum of its proper divisors (1).

11608661 is an equidigital number, since it uses as much as digits as its factorization.

11608661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 11608661 is about 3407.1485145206. The cubic root of 11608661 is about 226.4265640458.

The spelling of 11608661 in words is "eleven million, six hundred eight thousand, six hundred sixty-one".