70669871 has 2 divisors, whose sum is σ = 70669872. Its totient is φ = 70669870.

The previous prime is 70669849. The next prime is 70669909. The reversal of 70669871 is 17896607.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70669871 - 2¹⁴ = 70653487 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 (70660871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35334935 + 35334936.

It is an arithmetic number, because the mean of its divisors is an integer number (35334936).

Almost surely, 2^70669871 is an apocalyptic number.

70669871 is a deficient number, since it is larger than the sum of its proper divisors (1).

70669871 is an equidigital number, since it uses as much as digits as its factorization.

70669871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 70669871 is about 8406.5373965742. The cubic root of 70669871 is about 413.4389917337.

The spelling of 70669871 in words is "seventy million, six hundred sixty-nine thousand, eight hundred seventy-one".