705739138 has 16 divisors (see below), whose sum is σ = 1143943416. Its totient is φ = 324610560.

The previous prime is 705739129. The next prime is 705739187. The reversal of 705739138 is 831937507.

It can be written as a sum of positive squares in 4 ways, for example, as 705061809 + 677329 = 26553^2 + 823^2 .

It is a junction number, because it is equal to n+sod(n) for n = 705739094 and 705739103.

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 7 ways as a sum of consecutive naturals, for example, 38703 + ... + 53938.

Almost surely, 2^705739138 is an apocalyptic number.

705739138 is a deficient number, since it is larger than the sum of its proper divisors (438204278).

705739138 is a wasteful number, since it uses less digits than its factorization.

705739138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92949.

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 705739138 is about 26565.7512222034. The cubic root of 705739138 is about 890.3239732888.

The spelling of 705739138 in words is "seven hundred five million, seven hundred thirty-nine thousand, one hundred thirty-eight".