705139745 has 4 divisors (see below), whose sum is σ = 846167700. Its totient is φ = 564111792.

The previous prime is 705139679. The next prime is 705139763. The reversal of 705139745 is 547931507.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 289306081 + 415833664 = 17009^2 + 20392^2 .

It is a cyclic number.

It is not a de Polignac number, because 705139745 - 2⁸ = 705139489 is a prime.

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, 70513970 + ... + 70513979.

It is an arithmetic number, because the mean of its divisors is an integer number (211541925).

Almost surely, 2^705139745 is an apocalyptic number.

It is an amenable number.

705139745 is a deficient number, since it is larger than the sum of its proper divisors (141027955).

705139745 is a wasteful number, since it uses less digits than its factorization.

705139745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141027954.

The product of its (nonzero) digits is 132300, while the sum is 41.

The square root of 705139745 is about 26554.4675149023. The cubic root of 705139745 is about 890.0718475011.

The spelling of 705139745 in words is "seven hundred five million, one hundred thirty-nine thousand, seven hundred forty-five".