7070321 has 4 divisors (see below), whose sum is σ = 7110000. Its totient is φ = 7030644.

The previous prime is 7070311. The next prime is 7070333. The reversal of 7070321 is 1230707.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7070321 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7070293 and 7070302.

It is not an unprimeable number, because it can be changed into a prime (7070311) 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, 19571 + ... + 19928.

It is an arithmetic number, because the mean of its divisors is an integer number (1777500).

Almost surely, 2^7070321 is an apocalyptic number.

It is an amenable number.

7070321 is a deficient number, since it is larger than the sum of its proper divisors (39679).

7070321 is a wasteful number, since it uses less digits than its factorization.

7070321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39678.

The product of its (nonzero) digits is 294, while the sum is 20.

The square root of 7070321 is about 2659.0075216140. The cubic root of 7070321 is about 191.9315529311.

The spelling of 7070321 in words is "seven million, seventy thousand, three hundred twenty-one".