706000921 has 2 divisors, whose sum is σ = 706000922. Its totient is φ = 706000920.

The previous prime is 706000907. The next prime is 706000927. The reversal of 706000921 is 129000607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 667498896 + 38502025 = 25836^2 + 6205^2 .

It is a cyclic number.

It is not a de Polignac number, because 706000921 - 2¹¹ = 705998873 is a prime.

It is not a weakly prime, because it can be changed into another prime (706000927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 353000460 + 353000461.

It is an arithmetic number, because the mean of its divisors is an integer number (353000461).

Almost surely, 2^706000921 is an apocalyptic number.

It is an amenable number.

706000921 is a deficient number, since it is larger than the sum of its proper divisors (1).

706000921 is an equidigital number, since it uses as much as digits as its factorization.

706000921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 706000921 is about 26570.6778423133. The cubic root of 706000921 is about 890.4340436420.

The spelling of 706000921 in words is "seven hundred six million, nine hundred twenty-one", and thus it is an aban number.