8662620020 has 24 divisors (see below), whose sum is σ = 18201355368. Its totient is φ = 3463171200.

The previous prime is 8662619993. The next prime is 8662620037. The reversal of 8662620020 is 200262668.

It can be written as a sum of positive squares in 4 ways, for example, as 331676944 + 8330943076 = 18212^2 + 91274^2 .

It is a super-2 number, since 2×8662620020² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 79151 + ... + 153590.

It is an arithmetic number, because the mean of its divisors is an integer number (758389807).

Almost surely, 2^8662620020 is an apocalyptic number.

It is an amenable number.

8662620020 is an abundant number, since it is smaller than the sum of its proper divisors (9538735348).

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

8662620020 is a wasteful number, since it uses less digits than its factorization.

8662620020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234611 (or 234609 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 8662620020 is about 93073.1971085124. The cubic root of 8662620020 is about 2053.7603019334.

Adding to 8662620020 its reverse (200262668), we get a palindrome (8862882688).

The spelling of 8662620020 in words is "eight billion, six hundred sixty-two million, six hundred twenty thousand, twenty".