70731695605 has 4 divisors (see below), whose sum is σ = 84878034732. Its totient is φ = 56585356480.

The previous prime is 70731695603. The next prime is 70731695621. The reversal of 70731695605 is 50659613707.

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 14667874321 + 56063821284 = 121111^2 + 236778^2 .

It is not a de Polignac number, because 70731695605 - 2¹ = 70731695603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70731695603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7073169556 + ... + 7073169565.

It is an arithmetic number, because the mean of its divisors is an integer number (21219508683).

Almost surely, 2^70731695605 is an apocalyptic number.

It is an amenable number.

70731695605 is a deficient number, since it is larger than the sum of its proper divisors (14146339127).

70731695605 is a wasteful number, since it uses less digits than its factorization.

70731695605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14146339126.

The product of its (nonzero) digits is 1190700, while the sum is 49.

The spelling of 70731695605 in words is "seventy billion, seven hundred thirty-one million, six hundred ninety-five thousand, six hundred five".