70870871 has 2 divisors, whose sum is σ = 70870872. Its totient is φ = 70870870.

The previous prime is 70870861. The next prime is 70870879. The reversal of 70870871 is 17807807.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70870871 - 2²⁶ = 3762007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70870879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35435435 + 35435436.

It is an arithmetic number, because the mean of its divisors is an integer number (35435436).

Almost surely, 2^70870871 is an apocalyptic number.

70870871 is a deficient number, since it is larger than the sum of its proper divisors (1).

70870871 is an equidigital number, since it uses as much as digits as its factorization.

70870871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21952, while the sum is 38.

The square root of 70870871 is about 8418.4838896324. The cubic root of 70870871 is about 413.8305899005.

The spelling of 70870871 in words is "seventy million, eight hundred seventy thousand, eight hundred seventy-one".