6785221077 has 48 divisors (see below), whose sum is σ = 10335124800. Its totient is φ = 4284645120.

The previous prime is 6785221039. The next prime is 6785221087. The reversal of 6785221077 is 7701225876.

It is not a de Polignac number, because 6785221077 - 2⁶ = 6785221013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6785221087) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2838999 + ... + 2841387.

It is an arithmetic number, because the mean of its divisors is an integer number (215315100).

Almost surely, 2^6785221077 is an apocalyptic number.

It is an amenable number.

6785221077 is a deficient number, since it is larger than the sum of its proper divisors (3549903723).

6785221077 is a wasteful number, since it uses less digits than its factorization.

6785221077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2658 (or 2655 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The square root of 6785221077 is about 82372.4533870395. The cubic root of 6785221077 is about 1893.1629686157.

The spelling of 6785221077 in words is "six billion, seven hundred eighty-five million, two hundred twenty-one thousand, seventy-seven".