70866223 has 2 divisors, whose sum is σ = 70866224. Its totient is φ = 70866222.

The previous prime is 70866221. The next prime is 70866253. The reversal of 70866223 is 32266807.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70866223 - 2¹ = 70866221 is a prime.

Together with 70866221, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70866221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35433111 + 35433112.

It is an arithmetic number, because the mean of its divisors is an integer number (35433112).

Almost surely, 2^70866223 is an apocalyptic number.

70866223 is a deficient number, since it is larger than the sum of its proper divisors (1).

70866223 is an equidigital number, since it uses as much as digits as its factorization.

70866223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 70866223 is about 8418.2078258974. The cubic root of 70866223 is about 413.8215428049.

The spelling of 70866223 in words is "seventy million, eight hundred sixty-six thousand, two hundred twenty-three".