1060721 has 2 divisors, whose sum is σ = 1060722. Its totient is φ = 1060720.

The previous prime is 1060687. The next prime is 1060723. The reversal of 1060721 is 1270601.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 790321 + 270400 = 889^2 + 520^2 .

It is a cyclic number.

It is not a de Polignac number, because 1060721 - 2¹⁰ = 1059697 is a prime.

It is a super-2 number, since 2×1060721² = 2250258079682, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1060723, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1060721.

It is not a weakly prime, because it can be changed into another prime (1060723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530360 + 530361.

It is an arithmetic number, because the mean of its divisors is an integer number (530361).

2^1060721 is an apocalyptic number.

It is an amenable number.

1060721 is a deficient number, since it is larger than the sum of its proper divisors (1).

1060721 is an equidigital number, since it uses as much as digits as its factorization.

1060721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 1060721 is about 1029.9131031306. The cubic root of 1060721 is about 101.9843946394.

The spelling of 1060721 in words is "one million, sixty thousand, seven hundred twenty-one".