6904678680 has 128 divisors (see below), whose sum is σ = 23108198400. Its totient is φ = 1833840000.

The previous prime is 6904678661. The next prime is 6904678687. The reversal of 6904678680 is 868764096.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6904678687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 258345 + ... + 283815.

It is an arithmetic number, because the mean of its divisors is an integer number (180532800).

Almost surely, 2^6904678680 is an apocalyptic number.

6904678680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6904678680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11554099200).

6904678680 is an abundant number, since it is smaller than the sum of its proper divisors (16203519720).

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

6904678680 is a wasteful number, since it uses less digits than its factorization.

6904678680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25742 (or 25732 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The square root of 6904678680 is about 83094.3962009473. The cubic root of 6904678680 is about 1904.2084627754.

It can be divided in two parts, 6904 and 678680, that added together give a square (685584 = 828²).

The spelling of 6904678680 in words is "six billion, nine hundred four million, six hundred seventy-eight thousand, six hundred eighty".