70705945 has 4 divisors (see below), whose sum is σ = 84847140. Its totient is φ = 56564752.

The previous prime is 70705937. The next prime is 70705951. The reversal of 70705945 is 54950707.

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 42094144 + 28611801 = 6488^2 + 5349^2 .

It is a cyclic number.

It is not a de Polignac number, because 70705945 - 2³ = 70705937 is a prime.

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, 7070590 + ... + 7070599.

It is an arithmetic number, because the mean of its divisors is an integer number (21211785).

Almost surely, 2^70705945 is an apocalyptic number.

It is an amenable number.

70705945 is a deficient number, since it is larger than the sum of its proper divisors (14141195).

70705945 is a wasteful number, since it uses less digits than its factorization.

70705945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14141194.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 70705945 is about 8408.6827149084. The cubic root of 70705945 is about 413.5093275122.

The spelling of 70705945 in words is "seventy million, seven hundred five thousand, nine hundred forty-five".