8220770 has 16 divisors (see below), whose sum is σ = 15113088. Its totient is φ = 3218160.

The previous prime is 8220767. The next prime is 8220791. The reversal of 8220770 is 770228.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8276 + ... + 9215.

It is an arithmetic number, because the mean of its divisors is an integer number (944568).

Almost surely, 2^8220770 is an apocalyptic number.

8220770 is a deficient number, since it is larger than the sum of its proper divisors (6892318).

8220770 is a wasteful number, since it uses less digits than its factorization.

8220770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17545.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 8220770 is about 2867.1885183922. The cubic root of 8220770 is about 201.8230813778.

Adding to 8220770 its reverse (770228), we get a palindrome (8990998).

The spelling of 8220770 in words is "eight million, two hundred twenty thousand, seven hundred seventy".