6650740 has 48 divisors (see below), whose sum is σ = 15289344. Its totient is φ = 2419200.

The previous prime is 6650737. The next prime is 6650797. The reversal of 6650740 is 470566.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6650699 and 6650708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10225 + ... + 10855.

It is an arithmetic number, because the mean of its divisors is an integer number (318528).

Almost surely, 2^6650740 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 6650740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7644672).

6650740 is an abundant number, since it is smaller than the sum of its proper divisors (8638604).

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

6650740 is a wasteful number, since it uses less digits than its factorization.

6650740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688 (or 686 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 6650740 is about 2578.9028675001. The cubic root of 6650740 is about 188.0572105950.

The spelling of 6650740 in words is "six million, six hundred fifty thousand, seven hundred forty".