706879139 has 2 divisors, whose sum is σ = 706879140. Its totient is φ = 706879138.

The previous prime is 706879133. The next prime is 706879141. The reversal of 706879139 is 931978607.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 706879139 - 2⁸ = 706878883 is a prime.

Together with 706879141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (706879133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 353439569 + 353439570.

It is an arithmetic number, because the mean of its divisors is an integer number (353439570).

Almost surely, 2^706879139 is an apocalyptic number.

706879139 is a deficient number, since it is larger than the sum of its proper divisors (1).

706879139 is an equidigital number, since it uses as much as digits as its factorization.

706879139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 706879139 is about 26587.1987806162. The cubic root of 706879139 is about 890.8031041516.

The spelling of 706879139 in words is "seven hundred six million, eight hundred seventy-nine thousand, one hundred thirty-nine".