6690736 has 40 divisors (see below), whose sum is σ = 14703920. Its totient is φ = 2923776.

The previous prime is 6690721. The next prime is 6690737. The reversal of 6690736 is 6370966.

It is a junction number, because it is equal to n+sod(n) for n = 6690695 and 6690704.

It is not an unprimeable number, because it can be changed into a prime (6690737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3106 + ... + 4798.

It is an arithmetic number, because the mean of its divisors is an integer number (367598).

Almost surely, 2^6690736 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 6690736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7351960).

6690736 is an abundant number, since it is smaller than the sum of its proper divisors (8013184).

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

6690736 is a wasteful number, since it uses less digits than its factorization.

6690736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733 (or 1727 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 6690736 is about 2586.6457043824. The cubic root of 6690736 is about 188.4334348337.

The spelling of 6690736 in words is "six million, six hundred ninety thousand, seven hundred thirty-six".