13461661 has 4 divisors (see below), whose sum is σ = 13491324. Its totient is φ = 13432000.

The previous prime is 13461659. The next prime is 13461677. The reversal of 13461661 is 16616431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4280761 + 9180900 = 2069^2 + 3030^2 .

It is a cyclic number.

It is not a de Polignac number, because 13461661 - 2¹ = 13461659 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 (13461611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14140 + ... + 15061.

It is an arithmetic number, because the mean of its divisors is an integer number (3372831).

Almost surely, 2^13461661 is an apocalyptic number.

It is an amenable number.

13461661 is a deficient number, since it is larger than the sum of its proper divisors (29663).

13461661 is an equidigital number, since it uses as much as digits as its factorization.

13461661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29662.

The product of its digits is 2592, while the sum is 28.

The square root of 13461661 is about 3669.0136276662. The cubic root of 13461661 is about 237.8845390099.

The spelling of 13461661 in words is "thirteen million, four hundred sixty-one thousand, six hundred sixty-one".