70708129 has 2 divisors, whose sum is σ = 70708130. Its totient is φ = 70708128.

The previous prime is 70708123. The next prime is 70708189. The reversal of 70708129 is 92180707.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63632529 + 7075600 = 7977^2 + 2660^2 .

It is an emirp because it is prime and its reverse (92180707) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70708129 - 2¹⁵ = 70675361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70708094 and 70708103.

It is not a weakly prime, because it can be changed into another prime (70708123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35354064 + 35354065.

It is an arithmetic number, because the mean of its divisors is an integer number (35354065).

Almost surely, 2^70708129 is an apocalyptic number.

It is an amenable number.

70708129 is a deficient number, since it is larger than the sum of its proper divisors (1).

70708129 is an equidigital number, since it uses as much as digits as its factorization.

70708129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 70708129 is about 8408.8125796690. The cubic root of 70708129 is about 413.5135850282.

The spelling of 70708129 in words is "seventy million, seven hundred eight thousand, one hundred twenty-nine".