70248109 has 2 divisors, whose sum is σ = 70248110. Its totient is φ = 70248108.

The previous prime is 70248107. The next prime is 70248137. The reversal of 70248109 is 90184207.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64048009 + 6200100 = 8003^2 + 2490^2 .

It is a cyclic number.

It is not a de Polignac number, because 70248109 - 2¹ = 70248107 is a prime.

Together with 70248107, 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 (70248103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35124054 + 35124055.

It is an arithmetic number, because the mean of its divisors is an integer number (35124055).

Almost surely, 2^70248109 is an apocalyptic number.

It is an amenable number.

70248109 is a deficient number, since it is larger than the sum of its proper divisors (1).

70248109 is an equidigital number, since it uses as much as digits as its factorization.

70248109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 70248109 is about 8381.4144987585. The cubic root of 70248109 is about 412.6148739142.

The spelling of 70248109 in words is "seventy million, two hundred forty-eight thousand, one hundred nine".