70870771 has 2 divisors, whose sum is σ = 70870772. Its totient is φ = 70870770.

The previous prime is 70870759. The next prime is 70870777. The reversal of 70870771 is 17707807.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70870771 - 2¹⁵ = 70838003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70870771.

It is not a weakly prime, because it can be changed into another prime (70870777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35435385 + 35435386.

It is an arithmetic number, because the mean of its divisors is an integer number (35435386).

Almost surely, 2^70870771 is an apocalyptic number.

70870771 is a deficient number, since it is larger than the sum of its proper divisors (1).

70870771 is an equidigital number, since it uses as much as digits as its factorization.

70870771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19208, while the sum is 37.

The square root of 70870771 is about 8418.4779503186. The cubic root of 70870771 is about 413.8303952597.

The spelling of 70870771 in words is "seventy million, eight hundred seventy thousand, seven hundred seventy-one".