9879705066 has 48 divisors (see below), whose sum is σ = 25075029600. Its totient is φ = 2566156320.

The previous prime is 9879705061. The next prime is 9879705071. The reversal of 9879705066 is 6605079789.

It is an interprime number because it is at equal distance from previous prime (9879705061) and next prime (9879705071).

It is a super-2 number, since 2×9879705066² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9879704997 and 9879705015.

It is not an unprimeable number, because it can be changed into a prime (9879705061) 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, 1524241 + ... + 1530708.

It is an arithmetic number, because the mean of its divisors is an integer number (522396450).

Almost surely, 2^9879705066 is an apocalyptic number.

9879705066 is an abundant number, since it is smaller than the sum of its proper divisors (15195324534).

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

9879705066 is a wasteful number, since it uses less digits than its factorization.

9879705066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054979 (or 3054972 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 57.

The square root of 9879705066 is about 99396.7055087843. The cubic root of 9879705066 is about 2145.7608967514.

The spelling of 9879705066 in words is "nine billion, eight hundred seventy-nine million, seven hundred five thousand, sixty-six".