6780215847 has 8 divisors (see below), whose sum is σ = 9042195456. Its totient is φ = 4519190072.

The previous prime is 6780215803. The next prime is 6780215851. The reversal of 6780215847 is 7485120876.

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

It is a cyclic number.

It is not a de Polignac number, because 6780215847 - 2⁸ = 6780215591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6780215796 and 6780215805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6780219847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221703 + ... + 250424.

It is an arithmetic number, because the mean of its divisors is an integer number (1130274432).

Almost surely, 2^6780215847 is an apocalyptic number.

6780215847 is a deficient number, since it is larger than the sum of its proper divisors (2261979609).

6780215847 is a wasteful number, since it uses less digits than its factorization.

6780215847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476917.

The product of its (nonzero) digits is 752640, while the sum is 48.

The square root of 6780215847 is about 82342.0660841104. The cubic root of 6780215847 is about 1892.6973464983.

The spelling of 6780215847 in words is "six billion, seven hundred eighty million, two hundred fifteen thousand, eight hundred forty-seven".