6786478281 has 8 divisors (see below), whose sum is σ = 9871241184. Its totient is φ = 4113017120.

The previous prime is 6786478267. The next prime is 6786478291. The reversal of 6786478281 is 1828746876.

It is a happy number.

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 6786478281 - 2⁵ = 6786478249 is a prime.

It is a super-2 number, since 2×6786478281² = 92112574916969429922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6786478211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102825396 + ... + 102825461.

It is an arithmetic number, because the mean of its divisors is an integer number (1233905148).

Almost surely, 2^6786478281 is an apocalyptic number.

It is an amenable number.

6786478281 is a deficient number, since it is larger than the sum of its proper divisors (3084762903).

6786478281 is a wasteful number, since it uses less digits than its factorization.

6786478281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205650871.

The product of its digits is 7225344, while the sum is 57.

The square root of 6786478281 is about 82380.0842497748. The cubic root of 6786478281 is about 1893.2798866962.

The spelling of 6786478281 in words is "six billion, seven hundred eighty-six million, four hundred seventy-eight thousand, two hundred eighty-one".