1020202660 has 24 divisors (see below), whose sum is σ = 2147838840. Its totient is φ = 407049984.

The previous prime is 1020202643. The next prime is 1020202669. The reversal of 1020202660 is 662020201.

It can be written as a sum of positive squares in 4 ways, for example, as 19998784 + 1000203876 = 4472^2 + 31626^2 .

It is not an unprimeable number, because it can be changed into a prime (1020202669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56305 + ... + 72184.

It is an arithmetic number, because the mean of its divisors is an integer number (89493285).

Almost surely, 2^1020202660 is an apocalyptic number.

1020202660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020202660 is an abundant number, since it is smaller than the sum of its proper divisors (1127636180).

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

1020202660 is a wasteful number, since it uses less digits than its factorization.

1020202660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128895 (or 128893 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1020202660 is about 31940.6114531328. The cubic root of 1020202660 is about 1006.6893725173.

Adding to 1020202660 its reverse (662020201), we get a palindrome (1682222861).

The spelling of 1020202660 in words is "one billion, twenty million, two hundred two thousand, six hundred sixty".