8220697088 has 30 divisors (see below), whose sum is σ = 16429438311. Its totient is φ = 4109322752.

The previous prime is 8220697081. The next prime is 8220697117. The reversal of 8220697088 is 8807960228.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 4110348544 + 4110348544 = 64112^2 + 64112^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=64112.

It is a super-2 number, since 2×8220697088² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8220697081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2049581 + ... + 2053587.

Almost surely, 2^8220697088 is an apocalyptic number.

It is an amenable number.

8220697088 is a deficient number, since it is larger than the sum of its proper divisors (8208741223).

8220697088 is an frugal number, since it uses more digits than its factorization.

8220697088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8032 (or 4009 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 8220697088 is about 90668.0599108639. The cubic root of 8220697088 is about 2018.2248470342.

Multiplying 8220697088 by its sum of digits (50), we get a square (411034854400 = 641120²).

The spelling of 8220697088 in words is "eight billion, two hundred twenty million, six hundred ninety-seven thousand, eighty-eight".