14661661 has 4 divisors (see below), whose sum is σ = 16756192. Its totient is φ = 12567132.

The previous prime is 14661659. The next prime is 14661671. The reversal of 14661661 is 16616641.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16616641 = 1901 ⋅8741.

It is a cyclic number.

It is not a de Polignac number, because 14661661 - 2¹ = 14661659 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 (14661601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1047255 + ... + 1047268.

It is an arithmetic number, because the mean of its divisors is an integer number (4189048).

Almost surely, 2^14661661 is an apocalyptic number.

It is an amenable number.

14661661 is a deficient number, since it is larger than the sum of its proper divisors (2094531).

14661661 is an equidigital number, since it uses as much as digits as its factorization.

14661661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2094530.

The product of its digits is 5184, while the sum is 31.

The square root of 14661661 is about 3829.0548442142. The cubic root of 14661661 is about 244.7528313883.

The spelling of 14661661 in words is "fourteen million, six hundred sixty-one thousand, six hundred sixty-one".