70444321 has 2 divisors, whose sum is σ = 70444322. Its totient is φ = 70444320.

The previous prime is 70444291. The next prime is 70444349. The reversal of 70444321 is 12344407.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56791296 + 13653025 = 7536^2 + 3695^2 .

It is a cyclic number.

It is not a de Polignac number, because 70444321 - 2¹⁵ = 70411553 is a prime.

It is a super-2 number, since 2×70444321² = 9924804722302082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70444391) 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, 35222160 + 35222161.

It is an arithmetic number, because the mean of its divisors is an integer number (35222161).

Almost surely, 2^70444321 is an apocalyptic number.

It is an amenable number.

70444321 is a deficient number, since it is larger than the sum of its proper divisors (1).

70444321 is an equidigital number, since it uses as much as digits as its factorization.

70444321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 70444321 is about 8393.1115207651. Note that the first 3 decimals coincide. The cubic root of 70444321 is about 412.9986789273.

Adding to 70444321 its reverse (12344407), we get a palindrome (82788728).

The spelling of 70444321 in words is "seventy million, four hundred forty-four thousand, three hundred twenty-one".