70082321 has 4 divisors (see below), whose sum is σ = 70236132. Its totient is φ = 69928512.

The previous prime is 70082291. The next prime is 70082371. The reversal of 70082321 is 12328007.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 62980096 + 7102225 = 7936^2 + 2665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70082321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70082371) 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 in 3 ways as a sum of consecutive naturals, for example, 76220 + ... + 77133.

It is an arithmetic number, because the mean of its divisors is an integer number (17559033).

Almost surely, 2^70082321 is an apocalyptic number.

It is an amenable number.

70082321 is a deficient number, since it is larger than the sum of its proper divisors (153811).

70082321 is a wasteful number, since it uses less digits than its factorization.

70082321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153810.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 70082321 is about 8371.5184405220. The cubic root of 70082321 is about 412.2900230376.

The spelling of 70082321 in words is "seventy million, eighty-two thousand, three hundred twenty-one".