70006705 has 4 divisors (see below), whose sum is σ = 84008052. Its totient is φ = 56005360.

The previous prime is 70006691. The next prime is 70006723. The reversal of 70006705 is 50760007.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50760007 = 137 ⋅370511.

It can be written as a sum of positive squares in 2 ways, for example, as 25170289 + 44836416 = 5017^2 + 6696^2 .

It is not a de Polignac number, because 70006705 - 2⁷ = 70006577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70006705.

It is an unprimeable number.

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, 7000666 + ... + 7000675.

It is an arithmetic number, because the mean of its divisors is an integer number (21002013).

Almost surely, 2^70006705 is an apocalyptic number.

It is an amenable number.

70006705 is a deficient number, since it is larger than the sum of its proper divisors (14001347).

70006705 is a wasteful number, since it uses less digits than its factorization.

70006705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14001346.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 70006705 is about 8367.0009561372. Note that the first 3 decimals coincide. The cubic root of 70006705 is about 412.1416882359.

The spelling of 70006705 in words is "seventy million, six thousand, seven hundred five".