70705970 has 16 divisors (see below), whose sum is σ = 127654488. Its totient is φ = 28197120.

The previous prime is 70705969. The next prime is 70706003. The reversal of 70705970 is 7950707.

It can be written as a sum of positive squares in 4 ways, for example, as 49463089 + 21242881 = 7033^2 + 4609^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 70705970.

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 7 ways as a sum of consecutive naturals, for example, 7121 + ... + 13860.

Almost surely, 2^70705970 is an apocalyptic number.

70705970 is a deficient number, since it is larger than the sum of its proper divisors (56948518).

70705970 is a wasteful number, since it uses less digits than its factorization.

70705970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21325.

The product of its (nonzero) digits is 15435, while the sum is 35.

The square root of 70705970 is about 8408.6842014670. The cubic root of 70705970 is about 413.5093762480.

The spelling of 70705970 in words is "seventy million, seven hundred five thousand, nine hundred seventy".