8664020 has 12 divisors (see below), whose sum is σ = 18194484. Its totient is φ = 3465600.

The previous prime is 8663987. The next prime is 8664023. The reversal of 8664020 is 204668.

It can be written as a sum of positive squares in 2 ways, for example, as 2202256 + 6461764 = 1484^2 + 2542^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8664023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216581 + ... + 216620.

It is an arithmetic number, because the mean of its divisors is an integer number (1516207).

Almost surely, 2^8664020 is an apocalyptic number.

It is an amenable number.

8664020 is an abundant number, since it is smaller than the sum of its proper divisors (9530464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8664020 is a wasteful number, since it uses less digits than its factorization.

8664020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433210 (or 433208 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 8664020 is about 2943.4707404695. The cubic root of 8664020 is about 205.3870933146.

Adding to 8664020 its reverse (204668), we get a palindrome (8868688).

The spelling of 8664020 in words is "eight million, six hundred sixty-four thousand, twenty".