706623739 has 2 divisors, whose sum is σ = 706623740. Its totient is φ = 706623738.

The previous prime is 706623679. The next prime is 706623761. The reversal of 706623739 is 937326607.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 706623739 - 2¹¹ = 706621691 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 706623695 and 706623704.

It is not a weakly prime, because it can be changed into another prime (706624739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 353311869 + 353311870.

It is an arithmetic number, because the mean of its divisors is an integer number (353311870).

Almost surely, 2^706623739 is an apocalyptic number.

706623739 is a deficient number, since it is larger than the sum of its proper divisors (1).

706623739 is an equidigital number, since it uses as much as digits as its factorization.

706623739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 43.

The square root of 706623739 is about 26582.3952833450. The cubic root of 706623739 is about 890.6958069225.

The spelling of 706623739 in words is "seven hundred six million, six hundred twenty-three thousand, seven hundred thirty-nine".