8206666740 has 192 divisors, whose sum is σ = 25951000320. Its totient is φ = 2152834560.

The previous prime is 8206666691. The next prime is 8206666747. The reversal of 8206666740 is 476666028.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8206666747) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9995530 + ... + 9996350.

It is an arithmetic number, because the mean of its divisors is an integer number (135161460).

Almost surely, 2^8206666740 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 8206666740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12975500160).

8206666740 is an abundant number, since it is smaller than the sum of its proper divisors (17744333580).

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

8206666740 is a wasteful number, since it uses less digits than its factorization.

8206666740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119 (or 1111 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 8206666740 is about 90590.6548160460. The cubic root of 8206666740 is about 2017.0760182010.

The spelling of 8206666740 in words is "eight billion, two hundred six million, six hundred sixty-six thousand, seven hundred forty".