8266720700 has 36 divisors (see below), whose sum is σ = 20501469072. Its totient is φ = 2834304000.

The previous prime is 8266720691. The next prime is 8266720723. The reversal of 8266720700 is 70276628.

It is a super-2 number, since 2×8266720700² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5904101 + ... + 5905500.

It is an arithmetic number, because the mean of its divisors is an integer number (569485252).

Almost surely, 2^8266720700 is an apocalyptic number.

It is an amenable number.

8266720700 is an abundant number, since it is smaller than the sum of its proper divisors (12234748372).

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

8266720700 is a wasteful number, since it uses less digits than its factorization.

8266720700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11809622 (or 11809615 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 8266720700 is about 90921.5084564703. The cubic root of 8266720700 is about 2021.9841873323.

The spelling of 8266720700 in words is "eight billion, two hundred sixty-six million, seven hundred twenty thousand, seven hundred".