6786440678 has 8 divisors (see below), whose sum is σ = 10199126568. Its totient is φ = 3386731824.

The previous prime is 6786440677. The next prime is 6786440737. The reversal of 6786440678 is 8760446876.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6786440677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3242951 + ... + 3245042.

It is an arithmetic number, because the mean of its divisors is an integer number (1274890821).

Almost surely, 2^6786440678 is an apocalyptic number.

6786440678 is a deficient number, since it is larger than the sum of its proper divisors (3412685890).

6786440678 is a wasteful number, since it uses less digits than its factorization.

6786440678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6488518.

The product of its (nonzero) digits is 10838016, while the sum is 56.

The square root of 6786440678 is about 82379.8560207530. The cubic root of 6786440678 is about 1893.2763898833.

The spelling of 6786440678 in words is "six billion, seven hundred eighty-six million, four hundred forty thousand, six hundred seventy-eight".