705557243 has 2 divisors, whose sum is σ = 705557244. Its totient is φ = 705557242.

The previous prime is 705557231. The next prime is 705557257. The reversal of 705557243 is 342755507.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-705557243 is a prime.

It is a super-2 number, since 2×705557243² = 995622046299522098, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 705557197 and 705557206.

It is not a weakly prime, because it can be changed into another prime (705457243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352778621 + 352778622.

It is an arithmetic number, because the mean of its divisors is an integer number (352778622).

Almost surely, 2^705557243 is an apocalyptic number.

705557243 is a deficient number, since it is larger than the sum of its proper divisors (1).

705557243 is an equidigital number, since it uses as much as digits as its factorization.

705557243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 147000, while the sum is 38.

The square root of 705557243 is about 26562.3275147341. The cubic root of 705557243 is about 890.2474769436.

The spelling of 705557243 in words is "seven hundred five million, five hundred fifty-seven thousand, two hundred forty-three".