1000660693 has 2 divisors, whose sum is σ = 1000660694. Its totient is φ = 1000660692.

The previous prime is 1000660663. The next prime is 1000660721. The reversal of 1000660693 is 3960660001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 717007729 + 283652964 = 26777^2 + 16842^2 .

It is an emirp because it is prime and its reverse (3960660001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1000660693 - 2¹³ = 1000652501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000660663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500330346 + 500330347.

It is an arithmetic number, because the mean of its divisors is an integer number (500330347).

Almost surely, 2^1000660693 is an apocalyptic number.

It is an amenable number.

1000660693 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000660693 is an equidigital number, since it uses as much as digits as its factorization.

1000660693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 1000660693 is about 31633.2213503462. The cubic root of 1000660693 is about 1000.2201825161.

The spelling of 1000660693 in words is "one billion, six hundred sixty thousand, six hundred ninety-three".