70918871 has 2 divisors, whose sum is σ = 70918872. Its totient is φ = 70918870.

The previous prime is 70918831. The next prime is 70918901. The reversal of 70918871 is 17881907.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70918871 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70918831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35459435 + 35459436.

It is an arithmetic number, because the mean of its divisors is an integer number (35459436).

Almost surely, 2^70918871 is an apocalyptic number.

70918871 is a deficient number, since it is larger than the sum of its proper divisors (1).

70918871 is an equidigital number, since it uses as much as digits as its factorization.

70918871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 41.

The square root of 70918871 is about 8421.3342767046. The cubic root of 70918871 is about 413.9239963320.

The spelling of 70918871 in words is "seventy million, nine hundred eighteen thousand, eight hundred seventy-one".