705378251 has 2 divisors, whose sum is σ = 705378252. Its totient is φ = 705378250.

The previous prime is 705378119. The next prime is 705378269. The reversal of 705378251 is 152873507.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 705378251 - 2¹⁰ = 705377227 is a prime.

It is a Chen prime.

It is equal to p_36516944 and since 705378251 and 36516944 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (705377251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352689125 + 352689126.

It is an arithmetic number, because the mean of its divisors is an integer number (352689126).

Almost surely, 2^705378251 is an apocalyptic number.

705378251 is a deficient number, since it is larger than the sum of its proper divisors (1).

705378251 is an equidigital number, since it uses as much as digits as its factorization.

705378251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 705378251 is about 26558.9580179645. The cubic root of 705378251 is about 890.1721886261.

The spelling of 705378251 in words is "seven hundred five million, three hundred seventy-eight thousand, two hundred fifty-one".