7985687620 has 24 divisors (see below), whose sum is σ = 16863638400. Its totient is φ = 3176428512.

The previous prime is 7985687617. The next prime is 7985687621. The reversal of 7985687620 is 267865897.

It is not an unprimeable number, because it can be changed into a prime (7985687621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1111740 + ... + 1118899.

It is an arithmetic number, because the mean of its divisors is an integer number (702651600).

Almost surely, 2^7985687620 is an apocalyptic number.

It is an amenable number.

7985687620 is an abundant number, since it is smaller than the sum of its proper divisors (8877950780).

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

7985687620 is a wasteful number, since it uses less digits than its factorization.

7985687620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230827 (or 2230825 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 58.

The square root of 7985687620 is about 89362.6746466331. The cubic root of 7985687620 is about 1998.8065896942.

The spelling of 7985687620 in words is "seven billion, nine hundred eighty-five million, six hundred eighty-seven thousand, six hundred twenty".