705995609 has 4 divisors (see below), whose sum is σ = 770177040. Its totient is φ = 641814180.

The previous prime is 705995599. The next prime is 705995617. The reversal of 705995609 is 906599507.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 705995609 - 2¹² = 705991513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (705995659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32090699 + ... + 32090720.

It is an arithmetic number, because the mean of its divisors is an integer number (192544260).

Almost surely, 2^705995609 is an apocalyptic number.

It is an amenable number.

705995609 is a deficient number, since it is larger than the sum of its proper divisors (64181431).

705995609 is a wasteful number, since it uses less digits than its factorization.

705995609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64181430.

The product of its (nonzero) digits is 765450, while the sum is 50.

The square root of 705995609 is about 26570.5778823119. The cubic root of 705995609 is about 890.4318104072.

The spelling of 705995609 in words is "seven hundred five million, nine hundred ninety-five thousand, six hundred nine".