7970221 has 8 divisors (see below), whose sum is σ = 9135360. Its totient is φ = 6811728.

The previous prime is 7970219. The next prime is 7970227. The reversal of 7970221 is 1220797.

It is a happy number.

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

It is not a de Polignac number, because 7970221 - 2¹ = 7970219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7970221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7970227) 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, 1260 + ... + 4186.

It is an arithmetic number, because the mean of its divisors is an integer number (1141920).

Almost surely, 2^7970221 is an apocalyptic number.

It is an amenable number.

7970221 is a deficient number, since it is larger than the sum of its proper divisors (1165139).

7970221 is a wasteful number, since it uses less digits than its factorization.

7970221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3323.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 7970221 is about 2823.1579835355. The cubic root of 7970221 is about 199.7515331155.

The spelling of 7970221 in words is "seven million, nine hundred seventy thousand, two hundred twenty-one".