70867871 has 2 divisors, whose sum is σ = 70867872. Its totient is φ = 70867870.

The previous prime is 70867861. The next prime is 70867903. The reversal of 70867871 is 17876807.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70867871 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 (70867801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35433935 + 35433936.

It is an arithmetic number, because the mean of its divisors is an integer number (35433936).

Almost surely, 2^70867871 is an apocalyptic number.

70867871 is a deficient number, since it is larger than the sum of its proper divisors (1).

70867871 is an equidigital number, since it uses as much as digits as its factorization.

70867871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131712, while the sum is 44.

The square root of 70867871 is about 8418.3057083952. The cubic root of 70867871 is about 413.8247505983.

The spelling of 70867871 in words is "seventy million, eight hundred sixty-seven thousand, eight hundred seventy-one".