705970145 has 4 divisors (see below), whose sum is σ = 847164180. Its totient is φ = 564776112.

The previous prime is 705970121. The next prime is 705970147. The reversal of 705970145 is 541079507.

705970145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541079507 = 191 ⋅2832877.

It can be written as a sum of positive squares in 2 ways, for example, as 207475216 + 498494929 = 14404^2 + 22327^2 .

It is a cyclic number.

It is not a de Polignac number, because 705970145 - 2⁶ = 705970081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 705970099 and 705970108.

It is not an unprimeable number, because it can be changed into a prime (705970147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70597010 + ... + 70597019.

It is an arithmetic number, because the mean of its divisors is an integer number (211791045).

Almost surely, 2^705970145 is an apocalyptic number.

It is an amenable number.

705970145 is a deficient number, since it is larger than the sum of its proper divisors (141194035).

705970145 is a wasteful number, since it uses less digits than its factorization.

705970145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141194034.

The product of its (nonzero) digits is 44100, while the sum is 38.

The square root of 705970145 is about 26570.0987013598. The cubic root of 705970145 is about 890.4211048504.

The spelling of 705970145 in words is "seven hundred five million, nine hundred seventy thousand, one hundred forty-five".