6687072 has 144 divisors (see below), whose sum is σ = 22643712. Its totient is φ = 1831680.

The previous prime is 6687049. The next prime is 6687077. The reversal of 6687072 is 2707866.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6687077) 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, 62443 + ... + 62549.

It is an arithmetic number, because the mean of its divisors is an integer number (157248).

Almost surely, 2^6687072 is an apocalyptic number.

6687072 is a gapful number since it is divisible by the number (62) 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 6687072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11321856).

6687072 is an abundant number, since it is smaller than the sum of its proper divisors (15956640).

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

6687072 is a wasteful number, since it uses less digits than its factorization.

6687072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 6687072 is about 2585.9373542296. The cubic root of 6687072 is about 188.3990317340.

The spelling of 6687072 in words is "six million, six hundred eighty-seven thousand, seventy-two".