13660061 has 8 divisors (see below), whose sum is σ = 14737464. Its totient is φ = 12613120.

The previous prime is 13660051. The next prime is 13660081. The reversal of 13660061 is 16006631.

It can be written as a sum of positive squares in 4 ways, for example, as 5428900 + 8231161 = 2330^2 + 2869^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13660061 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 (13660001) 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, 6680 + ... + 8481.

It is an arithmetic number, because the mean of its divisors is an integer number (1842183).

Almost surely, 2^13660061 is an apocalyptic number.

It is an amenable number.

13660061 is a deficient number, since it is larger than the sum of its proper divisors (1077403).

13660061 is a wasteful number, since it uses less digits than its factorization.

13660061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15231.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 13660061 is about 3695.9519747962. The cubic root of 13660061 is about 239.0475037313.

Adding to 13660061 its reverse (16006631), we get a palindrome (29666692).

The spelling of 13660061 in words is "thirteen million, six hundred sixty thousand, sixty-one".