70383221 has 2 divisors, whose sum is σ = 70383222. Its totient is φ = 70383220.

The previous prime is 70383211. The next prime is 70383227. The reversal of 70383221 is 12238307.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40462321 + 29920900 = 6361^2 + 5470^2 .

It is a cyclic number.

It is not a de Polignac number, because 70383221 - 2¹⁴ = 70366837 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 (70383227) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35191610 + 35191611.

It is an arithmetic number, because the mean of its divisors is an integer number (35191611).

Almost surely, 2^70383221 is an apocalyptic number.

It is an amenable number.

70383221 is a deficient number, since it is larger than the sum of its proper divisors (1).

70383221 is an equidigital number, since it uses as much as digits as its factorization.

70383221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 70383221 is about 8389.4708414774. The cubic root of 70383221 is about 412.8792393562.

The spelling of 70383221 in words is "seventy million, three hundred eighty-three thousand, two hundred twenty-one".