7648720985 has 8 divisors (see below), whose sum is σ = 9474544896. Its totient is φ = 5921590320.

The previous prime is 7648720967. The next prime is 7648721051. The reversal of 7648720985 is 5890278467.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7648720985 - 2¹⁰ = 7648719961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7648720985.

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, 24673139 + ... + 24673448.

It is an arithmetic number, because the mean of its divisors is an integer number (1184318112).

Almost surely, 2^7648720985 is an apocalyptic number.

It is an amenable number.

7648720985 is a deficient number, since it is larger than the sum of its proper divisors (1825823911).

7648720985 is a wasteful number, since it uses less digits than its factorization.

7648720985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49346623.

The product of its (nonzero) digits is 6773760, while the sum is 56.

The square root of 7648720985 is about 87456.9664749470. The cubic root of 7648720985 is about 1970.2875189100.

The spelling of 7648720985 in words is "seven billion, six hundred forty-eight million, seven hundred twenty thousand, nine hundred eighty-five".