6706624 has 28 divisors (see below), whose sum is σ = 13623544. Its totient is φ = 3273984.

The previous prime is 6706621. The next prime is 6706631. The reversal of 6706624 is 4266076.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6706621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1534 + ... + 3970.

Almost surely, 2^6706624 is an apocalyptic number.

6706624 is a gapful number since it is divisible by the number (64) 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 6706624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6811772).

6706624 is an abundant number, since it is smaller than the sum of its proper divisors (6916920).

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

6706624 is a wasteful number, since it uses less digits than its factorization.

6706624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492 (or 2482 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 6706624 is about 2589.7150422392. The cubic root of 6706624 is about 188.5824699469.

The spelling of 6706624 in words is "six million, seven hundred six thousand, six hundred twenty-four".