7929620806 has 16 divisors (see below), whose sum is σ = 12414655584. Its totient is φ = 3791487744.

The previous prime is 7929620779. The next prime is 7929620819. The reversal of 7929620806 is 6080269297.

It is a super-2 number, since 2×7929620806² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7929620806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188500 + ... + 226696.

It is an arithmetic number, because the mean of its divisors is an integer number (775915974).

Almost surely, 2^7929620806 is an apocalyptic number.

7929620806 is a deficient number, since it is larger than the sum of its proper divisors (4485034778).

7929620806 is a wasteful number, since it uses less digits than its factorization.

7929620806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42735.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 7929620806 is about 89048.4183239658. The cubic root of 7929620806 is about 1994.1177838941.

The spelling of 7929620806 in words is "seven billion, nine hundred twenty-nine million, six hundred twenty thousand, eight hundred six".