70004321 has 2 divisors, whose sum is σ = 70004322. Its totient is φ = 70004320.

The previous prime is 70004309. The next prime is 70004323. The reversal of 70004321 is 12340007.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46771921 + 23232400 = 6839^2 + 4820^2 .

It is an emirp because it is prime and its reverse (12340007) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70004321 is a prime.

It is a Sophie Germain prime.

Together with 70004323, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 70004321.

It is not a weakly prime, because it can be changed into another prime (70004323) 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, 35002160 + 35002161.

It is an arithmetic number, because the mean of its divisors is an integer number (35002161).

Almost surely, 2^70004321 is an apocalyptic number.

It is an amenable number.

70004321 is a deficient number, since it is larger than the sum of its proper divisors (1).

70004321 is an equidigital number, since it uses as much as digits as its factorization.

70004321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 70004321 is about 8366.8584904969. The cubic root of 70004321 is about 412.1370098415.

Adding to 70004321 its reverse (12340007), we get a palindrome (82344328).

The spelling of 70004321 in words is "seventy million, four thousand, three hundred twenty-one".