6678346140 has 72 divisors (see below), whose sum is σ = 20369670048. Its totient is φ = 1771044480.

The previous prime is 6678346127. The next prime is 6678346159. The reversal of 6678346140 is 416438766.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69912 + ... + 135071.

It is an arithmetic number, because the mean of its divisors is an integer number (282912084).

Almost surely, 2^6678346140 is an apocalyptic number.

6678346140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6678346140 is an abundant number, since it is smaller than the sum of its proper divisors (13691323908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6678346140 is a wasteful number, since it uses less digits than its factorization.

6678346140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205179 (or 205174 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 6678346140 is about 81721.1486703411. The cubic root of 6678346140 is about 1883.1704970724.

The spelling of 6678346140 in words is "six billion, six hundred seventy-eight million, three hundred forty-six thousand, one hundred forty".