10608721 has 2 divisors, whose sum is σ = 10608722. Its totient is φ = 10608720.

The previous prime is 10608683. The next prime is 10608743. The reversal of 10608721 is 12780601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7507600 + 3101121 = 2740^2 + 1761^2 .

It is an emirp because it is prime and its reverse (12780601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10608721 - 2⁹ = 10608209 is a prime.

It is a super-2 number, since 2×10608721² = 225089922511682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10608781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5304360 + 5304361.

It is an arithmetic number, because the mean of its divisors is an integer number (5304361).

Almost surely, 2^10608721 is an apocalyptic number.

It is an amenable number.

10608721 is a deficient number, since it is larger than the sum of its proper divisors (1).

10608721 is an equidigital number, since it uses as much as digits as its factorization.

10608721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 10608721 is about 3257.1031607857. The cubic root of 10608721 is about 219.7291501550.

Subtracting from 10608721 its product of nonzero digits (672), we obtain a square (10608049 = 3257²).

The spelling of 10608721 in words is "ten million, six hundred eight thousand, seven hundred twenty-one".