6694688 has 144 divisors (see below), whose sum is σ = 18768960. Its totient is φ = 2280960.

The previous prime is 6694687. The next prime is 6694693. The reversal of 6694688 is 8864966.

6694688 = T₅₇ + T₅₈ + ... + T₃₄₂.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6694687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 352343 + ... + 352361.

It is an arithmetic number, because the mean of its divisors is an integer number (130340).

Almost surely, 2^6694688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6694688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9384480).

6694688 is an abundant number, since it is smaller than the sum of its proper divisors (12074272).

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

6694688 is a wasteful number, since it uses less digits than its factorization.

6694688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71 (or 52 counting only the distinct ones).

The product of its digits is 497664, while the sum is 47.

The square root of 6694688 is about 2587.4095153261. The cubic root of 6694688 is about 188.4705280305.

The spelling of 6694688 in words is "six million, six hundred ninety-four thousand, six hundred eighty-eight".