705497851 has 2 divisors, whose sum is σ = 705497852. Its totient is φ = 705497850.

The previous prime is 705497843. The next prime is 705497867. The reversal of 705497851 is 158794507.

It is a happy number.

705497851 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 705497851 - 2³ = 705497843 is a prime.

It is not a weakly prime, because it can be changed into another prime (705497831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352748925 + 352748926.

It is an arithmetic number, because the mean of its divisors is an integer number (352748926).

Almost surely, 2^705497851 is an apocalyptic number.

705497851 is a deficient number, since it is larger than the sum of its proper divisors (1).

705497851 is an equidigital number, since it uses as much as digits as its factorization.

705497851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352800, while the sum is 46.

The square root of 705497851 is about 26561.2095168876. The cubic root of 705497851 is about 890.2224966592. Note that the first 3 decimals are identical.

It can be divided in two parts, 70549 and 7851, that added together give a square (78400 = 280²).

The spelling of 705497851 in words is "seven hundred five million, four hundred ninety-seven thousand, eight hundred fifty-one".