70873109 has 2 divisors, whose sum is σ = 70873110. Its totient is φ = 70873108.

The previous prime is 70873079. The next prime is 70873139. The reversal of 70873109 is 90137807.

It is a balanced prime because it is at equal distance from previous prime (70873079) and next prime (70873139).

It can be written as a sum of positive squares in only one way, i.e., 65966884 + 4906225 = 8122^2 + 2215^2 .

It is a cyclic number.

It is not a de Polignac number, because 70873109 - 2¹² = 70869013 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 (70873139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35436554 + 35436555.

It is an arithmetic number, because the mean of its divisors is an integer number (35436555).

Almost surely, 2^70873109 is an apocalyptic number.

It is an amenable number.

70873109 is a deficient number, since it is larger than the sum of its proper divisors (1).

70873109 is an equidigital number, since it uses as much as digits as its factorization.

70873109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 70873109 is about 8418.6168103792. The cubic root of 70873109 is about 413.8349459125.

The spelling of 70873109 in words is "seventy million, eight hundred seventy-three thousand, one hundred nine".