7970321 has 8 divisors (see below), whose sum is σ = 8154984. Its totient is φ = 7787520.

The previous prime is 7970311. The next prime is 7970327. The reversal of 7970321 is 1230797.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 739600 + 7230721 = 860^2 + 2689^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7970321 - 2⁶ = 7970257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7970327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11435 + ... + 12111.

It is an arithmetic number, because the mean of its divisors is an integer number (1019373).

Almost surely, 2^7970321 is an apocalyptic number.

It is an amenable number.

7970321 is a deficient number, since it is larger than the sum of its proper divisors (184663).

7970321 is a wasteful number, since it uses less digits than its factorization.

7970321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 7970321 is about 2823.1756941430. The cubic root of 7970321 is about 199.7523685198.

The spelling of 7970321 in words is "seven million, nine hundred seventy thousand, three hundred twenty-one".