13706561 has 8 divisors (see below), whose sum is σ = 15086304. Its totient is φ = 12349120.

The previous prime is 13706533. The next prime is 13706591. The reversal of 13706561 is 16560731.

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-13706561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13706591) 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, 4271 + ... + 6756.

It is an arithmetic number, because the mean of its divisors is an integer number (1885788).

Almost surely, 2^13706561 is an apocalyptic number.

13706561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13706561 is a deficient number, since it is larger than the sum of its proper divisors (1379743).

13706561 is a wasteful number, since it uses less digits than its factorization.

13706561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11151.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 13706561 is about 3702.2372965546. The cubic root of 13706561 is about 239.3184424869.

The spelling of 13706561 in words is "thirteen million, seven hundred six thousand, five hundred sixty-one".