6687074499840 has 3456 divisors, whose sum is σ = 30923646566400. Its totient is φ = 1357786644480.

The previous prime is 6687074499773. The next prime is 6687074499883. The reversal of 6687074499840 is 489944707866.

6687074499840 is a `hidden beast` number, since 6 + 68 + 7 + 0 + 74 + 499 + 8 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (3456).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 52654129857 + ... + 52654129983.

It is an arithmetic number, because the mean of its divisors is an integer number (8947814400).

Almost surely, 2^{6687074499840} is an apocalyptic number.

6687074499840 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 6687074499840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15461823283200).

6687074499840 is an abundant number, since it is smaller than the sum of its proper divisors (24236572066560).

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

6687074499840 is a wasteful number, since it uses less digits than its factorization.

6687074499840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 585252864, while the sum is 72.

The spelling of 6687074499840 in words is "six trillion, six hundred eighty-seven billion, seventy-four million, four hundred ninety-nine thousand, eight hundred forty".