6785397549 has 36 divisors (see below), whose sum is σ = 11666493696. Its totient is φ = 3787188048.

The previous prime is 6785397547. The next prime is 6785397589. The reversal of 6785397549 is 9457935876.

6785397549 is a `hidden beast` number, since 6 + 7 + 85 + 3 + 9 + 7 + 549 = 666.

It is not a de Polignac number, because 6785397549 - 2¹ = 6785397547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6785397547) 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 35 ways as a sum of consecutive naturals, for example, 159949 + ... + 197874.

Almost surely, 2^6785397549 is an apocalyptic number.

It is an amenable number.

6785397549 is a deficient number, since it is larger than the sum of its proper divisors (4881096147).

6785397549 is a wasteful number, since it uses less digits than its factorization.

6785397549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357886 (or 357876 counting only the distinct ones).

The product of its digits is 57153600, while the sum is 63.

The square root of 6785397549 is about 82373.5245634178. The cubic root of 6785397549 is about 1893.1793811174.

The spelling of 6785397549 in words is "six billion, seven hundred eighty-five million, three hundred ninety-seven thousand, five hundred forty-nine".