705801139 has 2 divisors, whose sum is σ = 705801140. Its totient is φ = 705801138.

The previous prime is 705801137. The next prime is 705801143. The reversal of 705801139 is 931108507.

It is a happy number.

705801139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 705801139 - 2¹ = 705801137 is a prime.

Together with 705801137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (705801137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352900569 + 352900570.

It is an arithmetic number, because the mean of its divisors is an integer number (352900570).

Almost surely, 2^705801139 is an apocalyptic number.

705801139 is a deficient number, since it is larger than the sum of its proper divisors (1).

705801139 is an equidigital number, since it uses as much as digits as its factorization.

705801139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 705801139 is about 26566.9181313904. The cubic root of 705801139 is about 890.3500449430.

The spelling of 705801139 in words is "seven hundred five million, eight hundred one thousand, one hundred thirty-nine".