70286387 has 2 divisors, whose sum is σ = 70286388. Its totient is φ = 70286386.

The previous prime is 70286327. The next prime is 70286389. The reversal of 70286387 is 78368207.

It is a strong prime.

It is an emirp because it is prime and its reverse (78368207) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70286387 - 2¹⁸ = 70024243 is a prime.

Together with 70286389, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70286389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35143193 + 35143194.

It is an arithmetic number, because the mean of its divisors is an integer number (35143194).

Almost surely, 2^70286387 is an apocalyptic number.

70286387 is a deficient number, since it is larger than the sum of its proper divisors (1).

70286387 is an equidigital number, since it uses as much as digits as its factorization.

70286387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 70286387 is about 8383.6976925459. The cubic root of 70286387 is about 412.6898045400.

The spelling of 70286387 in words is "seventy million, two hundred eighty-six thousand, three hundred eighty-seven".