6785221078 has 4 divisors (see below), whose sum is σ = 10177831620. Its totient is φ = 3392610538.

The previous prime is 6785221039. The next prime is 6785221087. The reversal of 6785221078 is 8701225876.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1696305268 + ... + 1696305271.

It is an arithmetic number, because the mean of its divisors is an integer number (2544457905).

Almost surely, 2^6785221078 is an apocalyptic number.

6785221078 is a deficient number, since it is larger than the sum of its proper divisors (3392610542).

6785221078 is a wasteful number, since it uses less digits than its factorization.

6785221078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3392610541.

The product of its (nonzero) digits is 376320, while the sum is 46.

The square root of 6785221078 is about 82372.4533931095. The cubic root of 6785221078 is about 1893.1629687087.

The spelling of 6785221078 in words is "six billion, seven hundred eighty-five million, two hundred twenty-one thousand, seventy-eight".