720010660 has 12 divisors (see below), whose sum is σ = 1512022428. Its totient is φ = 288004256.

The previous prime is 720010657. The next prime is 720010663. The reversal of 720010660 is 66010027.

It is an interprime number because it is at equal distance from previous prime (720010657) and next prime (720010663).

It can be written as a sum of positive squares in 2 ways, for example, as 386436964 + 333573696 = 19658^2 + 18264^2 .

It is not an unprimeable number, because it can be changed into a prime (720010663) 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 3 ways as a sum of consecutive naturals, for example, 18000247 + ... + 18000286.

It is an arithmetic number, because the mean of its divisors is an integer number (126001869).

Almost surely, 2^720010660 is an apocalyptic number.

It is an amenable number.

720010660 is an abundant number, since it is smaller than the sum of its proper divisors (792011768).

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

720010660 is a wasteful number, since it uses less digits than its factorization.

720010660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36000542 (or 36000540 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 720010660 is about 26833.0143666342. The cubic root of 720010660 is about 896.2853726021.

Adding to 720010660 its reverse (66010027), we get a palindrome (786020687).

The spelling of 720010660 in words is "seven hundred twenty million, ten thousand, six hundred sixty".