70855871 has 2 divisors, whose sum is σ = 70855872. Its totient is φ = 70855870.

The previous prime is 70855867. The next prime is 70855877. The reversal of 70855871 is 17855807.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70855871 - 2² = 70855867 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70855877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35427935 + 35427936.

It is an arithmetic number, because the mean of its divisors is an integer number (35427936).

Almost surely, 2^70855871 is an apocalyptic number.

70855871 is a deficient number, since it is larger than the sum of its proper divisors (1).

70855871 is an equidigital number, since it uses as much as digits as its factorization.

70855871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78400, while the sum is 41.

The square root of 70855871 is about 8417.5929457298. The cubic root of 70855871 is about 413.8013917416.

The spelling of 70855871 in words is "seventy million, eight hundred fifty-five thousand, eight hundred seventy-one".