15106681 has 2 divisors, whose sum is σ = 15106682. Its totient is φ = 15106680.

The previous prime is 15106667. The next prime is 15106723. The reversal of 15106681 is 18660151.

15106681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15093225 + 13456 = 3885^2 + 116^2 .

It is a cyclic number.

It is not a de Polignac number, because 15106681 - 2¹⁵ = 15073913 is a prime.

It is a super-2 number, since 2×15106681² = 456423621671522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15106601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7553340 + 7553341.

It is an arithmetic number, because the mean of its divisors is an integer number (7553341).

Almost surely, 2^15106681 is an apocalyptic number.

It is an amenable number.

15106681 is a deficient number, since it is larger than the sum of its proper divisors (1).

15106681 is an equidigital number, since it uses as much as digits as its factorization.

15106681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 15106681 is about 3886.7314031201. The cubic root of 15106681 is about 247.2044889879.

The spelling of 15106681 in words is "fifteen million, one hundred six thousand, six hundred eighty-one".