705388738 has 8 divisors (see below), whose sum is σ = 1058251788. Its totient is φ = 352638144.

The previous prime is 705388669. The next prime is 705388759. The reversal of 705388738 is 837883507.

It can be written as a sum of positive squares in 2 ways, for example, as 582112129 + 123276609 = 24127^2 + 11103^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 705388691 and 705388700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10131 + ... + 38902.

Almost surely, 2^705388738 is an apocalyptic number.

705388738 is a deficient number, since it is larger than the sum of its proper divisors (352863050).

705388738 is a wasteful number, since it uses less digits than its factorization.

705388738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56228.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The square root of 705388738 is about 26559.1554459098. The cubic root of 705388738 is about 890.1766000605.

The spelling of 705388738 in words is "seven hundred five million, three hundred eighty-eight thousand, seven hundred thirty-eight".