70146247 has 2 divisors, whose sum is σ = 70146248. Its totient is φ = 70146246.

The previous prime is 70146227. The next prime is 70146257. The reversal of 70146247 is 74264107.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70146247 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 (70146227) 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, 35073123 + 35073124.

It is an arithmetic number, because the mean of its divisors is an integer number (35073124).

Almost surely, 2^70146247 is an apocalyptic number.

70146247 is a deficient number, since it is larger than the sum of its proper divisors (1).

70146247 is an equidigital number, since it uses as much as digits as its factorization.

70146247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 70146247 is about 8375.3356350656. The cubic root of 70146247 is about 412.4153425290.

The spelling of 70146247 in words is "seventy million, one hundred forty-six thousand, two hundred forty-seven".