11681015 has 8 divisors (see below), whose sum is σ = 14035680. Its totient is φ = 9332512.

The previous prime is 11680969. The next prime is 11681039. The reversal of 11681015 is 51018611.

It is a happy number.

11681015 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11681015 - 2⁸ = 11680759 is a prime.

It is a super-2 number, since 2×11681015² = 272892222860450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5981 + ... + 7689.

It is an arithmetic number, because the mean of its divisors is an integer number (1754460).

Almost surely, 2^11681015 is an apocalyptic number.

11681015 is a deficient number, since it is larger than the sum of its proper divisors (2354665).

11681015 is a wasteful number, since it uses less digits than its factorization.

11681015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3081.

The product of its (nonzero) digits is 240, while the sum is 23.

The square root of 11681015 is about 3417.7499908566. The cubic root of 11681015 is about 226.8960108998.

Adding to 11681015 its reverse (51018611), we get a palindrome (62699626).

The spelling of 11681015 in words is "eleven million, six hundred eighty-one thousand, fifteen".