9826820685 has 24 divisors (see below), whose sum is σ = 18581625504. Its totient is φ = 4764518880.

The previous prime is 9826820629. The next prime is 9826820711. The reversal of 9826820685 is 5860286289.

It is not a de Polignac number, because 9826820685 - 2¹³ = 9826812493 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9925587 + ... + 9926576.

It is an arithmetic number, because the mean of its divisors is an integer number (774234396).

Almost surely, 2^9826820685 is an apocalyptic number.

It is an amenable number.

9826820685 is a deficient number, since it is larger than the sum of its proper divisors (8754804819).

9826820685 is a wasteful number, since it uses less digits than its factorization.

9826820685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19852185 (or 19852182 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The square root of 9826820685 is about 99130.3217234767. The cubic root of 9826820685 is about 2141.9254139747.

The spelling of 9826820685 in words is "nine billion, eight hundred twenty-six million, eight hundred twenty thousand, six hundred eighty-five".