6930340785 has 24 divisors (see below), whose sum is σ = 12719215080. Its totient is φ = 3478758912.

The previous prime is 6930340783. The next prime is 6930340793. The reversal of 6930340785 is 5870430396.

It can be written as a sum of positive squares in 4 ways, for example, as 423659889 + 6506680896 = 20583^2 + 80664^2 .

It is not a de Polignac number, because 6930340785 - 2¹ = 6930340783 is a prime.

It is a super-3 number, since 3×6930340785³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 6930340785.

It is not an unprimeable number, because it can be changed into a prime (6930340783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4528870 + ... + 4530399.

It is an arithmetic number, because the mean of its divisors is an integer number (529967295).

Almost surely, 2^6930340785 is an apocalyptic number.

It is an amenable number.

6930340785 is a deficient number, since it is larger than the sum of its proper divisors (5788874295).

6930340785 is a wasteful number, since it uses less digits than its factorization.

6930340785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9059297 (or 9059294 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 6930340785 is about 83248.6683677283. The cubic root of 6930340785 is about 1906.5646227840.

The spelling of 6930340785 in words is "six billion, nine hundred thirty million, three hundred forty thousand, seven hundred eighty-five".