15068681 has 8 divisors (see below), whose sum is σ = 16021800. Its totient is φ = 14123008.

The previous prime is 15068639. The next prime is 15068687. The reversal of 15068681 is 18686051.

It can be written as a sum of positive squares in 4 ways, for example, as 3644281 + 11424400 = 1909^2 + 3380^2 .

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-15068681 is a prime.

It is a super-2 number, since 2×15068681² = 454130294159522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15068687) 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 7 ways as a sum of consecutive naturals, for example, 2645 + ... + 6093.

It is an arithmetic number, because the mean of its divisors is an integer number (2002725).

Almost surely, 2^15068681 is an apocalyptic number.

It is an amenable number.

15068681 is a deficient number, since it is larger than the sum of its proper divisors (953119).

15068681 is a wasteful number, since it uses less digits than its factorization.

15068681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3723.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 15068681 is about 3881.8398988109. The cubic root of 15068681 is about 246.9970386528.

The spelling of 15068681 in words is "fifteen million, sixty-eight thousand, six hundred eighty-one".