705722647243 has 4 divisors (see below), whose sum is σ = 712710000288. Its totient is φ = 698735294200.

The previous prime is 705722647187. The next prime is 705722647247. The reversal of 705722647243 is 342746227507.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342746227507 = 36473 ⋅9397259.

It is a cyclic number.

It is not a de Polignac number, because 705722647243 - 2⁹ = 705722646731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (705722647247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3493676371 + ... + 3493676572.

It is an arithmetic number, because the mean of its divisors is an integer number (178177500072).

Almost surely, 2^705722647243 is an apocalyptic number.

705722647243 is a deficient number, since it is larger than the sum of its proper divisors (6987353045).

705722647243 is a wasteful number, since it uses less digits than its factorization.

705722647243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6987353044.

The product of its (nonzero) digits is 3951360, while the sum is 49.

The spelling of 705722647243 in words is "seven hundred five billion, seven hundred twenty-two million, six hundred forty-seven thousand, two hundred forty-three".