70421317 has 2 divisors, whose sum is σ = 70421318. Its totient is φ = 70421316.

The previous prime is 70421291. The next prime is 70421347. The reversal of 70421317 is 71312407.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64496961 + 5924356 = 8031^2 + 2434^2 .

It is a cyclic number.

It is not a de Polignac number, because 70421317 - 2¹¹ = 70419269 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70421291 and 70421300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70421347) 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, 35210658 + 35210659.

It is an arithmetic number, because the mean of its divisors is an integer number (35210659).

Almost surely, 2^70421317 is an apocalyptic number.

It is an amenable number.

70421317 is a deficient number, since it is larger than the sum of its proper divisors (1).

70421317 is an equidigital number, since it uses as much as digits as its factorization.

70421317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 70421317 is about 8391.7409993398. The cubic root of 70421317 is about 412.9537183313.

The spelling of 70421317 in words is "seventy million, four hundred twenty-one thousand, three hundred seventeen".