6767689440 has 48 divisors (see below), whose sum is σ = 21318223248. Its totient is φ = 1804717056.

The previous prime is 6767689403. The next prime is 6767689463. The reversal of 6767689440 is 449867676.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 7049197 + ... + 7050156.

It is an arithmetic number, because the mean of its divisors is an integer number (444129651).

Almost surely, 2^6767689440 is an apocalyptic number.

6767689440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6767689440 is an abundant number, since it is smaller than the sum of its proper divisors (14550533808).

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

6767689440 is a wasteful number, since it uses less digits than its factorization.

6767689440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14099371 (or 14099363 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 57.

The square root of 6767689440 is about 82265.9676901694. The cubic root of 6767689440 is about 1891.5310457302.

The spelling of 6767689440 in words is "six billion, seven hundred sixty-seven million, six hundred eighty-nine thousand, four hundred forty".