70723117 has 2 divisors, whose sum is σ = 70723118. Its totient is φ = 70723116.

The previous prime is 70723087. The next prime is 70723127. The reversal of 70723117 is 71132707.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67059721 + 3663396 = 8189^2 + 1914^2 .

It is a cyclic number.

It is not a de Polignac number, because 70723117 - 2¹¹ = 70721069 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 (70723127) 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, 35361558 + 35361559.

It is an arithmetic number, because the mean of its divisors is an integer number (35361559).

Almost surely, 2^70723117 is an apocalyptic number.

It is an amenable number.

70723117 is a deficient number, since it is larger than the sum of its proper divisors (1).

70723117 is an equidigital number, since it uses as much as digits as its factorization.

70723117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2058, while the sum is 28.

The square root of 70723117 is about 8409.7037403228. The cubic root of 70723117 is about 413.5428004515.

The spelling of 70723117 in words is "seventy million, seven hundred twenty-three thousand, one hundred seventeen".