8720700 has 72 divisors (see below), whose sum is σ = 25883760. Its totient is φ = 2265600.

The previous prime is 8720693. The next prime is 8720707. The reversal of 8720700 is 70278.

It is an interprime number because it is at equal distance from previous prime (8720693) and next prime (8720707).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8720707) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11946 + ... + 12654.

Almost surely, 2^8720700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8720700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12941880).

8720700 is an abundant number, since it is smaller than the sum of its proper divisors (17163060).

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

8720700 is a wasteful number, since it uses less digits than its factorization.

8720700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767 (or 760 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 8720700 is about 2953.0831346239. The cubic root of 8720700 is about 205.8340008101.

Adding to 8720700 its reverse (70278), we get a palindrome (8790978).

The spelling of 8720700 in words is "eight million, seven hundred twenty thousand, seven hundred".