70738247 has 2 divisors, whose sum is σ = 70738248. Its totient is φ = 70738246.

The previous prime is 70738231. The next prime is 70738267. The reversal of 70738247 is 74283707.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70738247 - 2⁴ = 70738231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70738247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70738267) 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, 35369123 + 35369124.

It is an arithmetic number, because the mean of its divisors is an integer number (35369124).

Almost surely, 2^70738247 is an apocalyptic number.

70738247 is a deficient number, since it is larger than the sum of its proper divisors (1).

70738247 is an equidigital number, since it uses as much as digits as its factorization.

70738247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 70738247 is about 8410.6032482813. The cubic root of 70738247 is about 413.5722884826.

The spelling of 70738247 in words is "seventy million, seven hundred thirty-eight thousand, two hundred forty-seven".