7786500085 has 72 divisors (see below), whose sum is σ = 11907612360. Its totient is φ = 4870914048.

The previous prime is 7786500053. The next prime is 7786500131. The reversal of 7786500085 is 5800056877.

It can be written as a sum of positive squares in 12 ways, for example, as 7554912561 + 231587524 = 86919^2 + 15218^2 .

It is not a de Polignac number, because 7786500085 - 2⁵ = 7786500053 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3683989 + ... + 3686101.

It is an arithmetic number, because the mean of its divisors is an integer number (165383505).

Almost surely, 2^7786500085 is an apocalyptic number.

It is an amenable number.

7786500085 is a deficient number, since it is larger than the sum of its proper divisors (4121112275).

7786500085 is a wasteful number, since it uses less digits than its factorization.

7786500085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247 (or 2227 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 46.

The square root of 7786500085 is about 88241.1473463486. The cubic root of 7786500085 is about 1982.0476796621.

The spelling of 7786500085 in words is "seven billion, seven hundred eighty-six million, five hundred thousand, eighty-five".