7085648639 has 4 divisors (see below), whose sum is σ = 7086146856. Its totient is φ = 7085150424.

The previous prime is 7085648573. The next prime is 7085648657. The reversal of 7085648639 is 9368465807.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7085648639 - 2¹⁶ = 7085583103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7085648539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227129 + ... + 256434.

It is an arithmetic number, because the mean of its divisors is an integer number (1771536714).

Almost surely, 2^7085648639 is an apocalyptic number.

7085648639 is a deficient number, since it is larger than the sum of its proper divisors (498217).

7085648639 is a wasteful number, since it uses less digits than its factorization.

7085648639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498216.

The product of its (nonzero) digits is 8709120, while the sum is 56.

The square root of 7085648639 is about 84176.2949944936. The cubic root of 7085648639 is about 1920.7014797011.

The spelling of 7085648639 in words is "seven billion, eighty-five million, six hundred forty-eight thousand, six hundred thirty-nine".