8220970 has 16 divisors (see below), whose sum is σ = 15041448. Its totient is φ = 3234240.

The previous prime is 8220937. The next prime is 8221009. The reversal of 8220970 is 790228.

It can be written as a sum of positive squares in 4 ways, for example, as 5049009 + 3171961 = 2247^2 + 1781^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6129 + ... + 7348.

Almost surely, 2^8220970 is an apocalyptic number.

8220970 is a deficient number, since it is larger than the sum of its proper divisors (6820478).

8220970 is a wasteful number, since it uses less digits than its factorization.

8220970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13545.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 8220970 is about 2867.2233955519. The cubic root of 8220970 is about 201.8247180569.

The spelling of 8220970 in words is "eight million, two hundred twenty thousand, nine hundred seventy".