6685084778 has 8 divisors (see below), whose sum is σ = 10056526272. Its totient is φ = 3332909356.

The previous prime is 6685084759. The next prime is 6685084787. The reversal of 6685084778 is 8774805866.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4815650 + ... + 4817037.

It is an arithmetic number, because the mean of its divisors is an integer number (1257065784).

Almost surely, 2^6685084778 is an apocalyptic number.

6685084778 is a deficient number, since it is larger than the sum of its proper divisors (3371441494).

6685084778 is a wasteful number, since it uses less digits than its factorization.

6685084778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9633036.

The product of its (nonzero) digits is 18063360, while the sum is 59.

The square root of 6685084778 is about 81762.3677372421. The cubic root of 6685084778 is about 1883.8036747189.

The spelling of 6685084778 in words is "six billion, six hundred eighty-five million, eighty-four thousand, seven hundred seventy-eight".