7841796666 has 32 divisors (see below), whose sum is σ = 17214363648. Its totient is φ = 2361720240.

The previous prime is 7841796637. The next prime is 7841796667. The reversal of 7841796666 is 6666971487.

It is a happy number.

It is a super-2 number, since 2×7841796666² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7841796667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353706 + ... + 375221.

It is an arithmetic number, because the mean of its divisors is an integer number (537948864).

Almost surely, 2^7841796666 is an apocalyptic number.

7841796666 is an abundant number, since it is smaller than the sum of its proper divisors (9372566982).

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

7841796666 is a wasteful number, since it uses less digits than its factorization.

7841796666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729106.

The product of its digits is 18289152, while the sum is 60.

The square root of 7841796666 is about 88553.9195405827. The cubic root of 7841796666 is about 1986.7285175042.

The spelling of 7841796666 in words is "seven billion, eight hundred forty-one million, seven hundred ninety-six thousand, six hundred sixty-six".