70706971 has 2 divisors, whose sum is σ = 70706972. Its totient is φ = 70706970.

The previous prime is 70706947. The next prime is 70706989. The reversal of 70706971 is 17960707.

It is a strong prime.

It is an emirp because it is prime and its reverse (17960707) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70706971 - 2⁹ = 70706459 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70706971.

It is not a weakly prime, because it can be changed into another prime (70706171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35353485 + 35353486.

It is an arithmetic number, because the mean of its divisors is an integer number (35353486).

Almost surely, 2^70706971 is an apocalyptic number.

70706971 is a deficient number, since it is larger than the sum of its proper divisors (1).

70706971 is an equidigital number, since it uses as much as digits as its factorization.

70706971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18522, while the sum is 37.

The square root of 70706971 is about 8408.7437230540. The cubic root of 70706971 is about 413.5113276199.

It can be divided in two parts, 7070 and 6971, that added together give a palindrome (14041).

The spelling of 70706971 in words is "seventy million, seven hundred six thousand, nine hundred seventy-one".