6651340 has 12 divisors (see below), whose sum is σ = 13967856. Its totient is φ = 2660528.

The previous prime is 6651319. The next prime is 6651343. The reversal of 6651340 is 431566.

It is not an unprimeable number, because it can be changed into a prime (6651343) 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, 166264 + ... + 166303.

It is an arithmetic number, because the mean of its divisors is an integer number (1163988).

Almost surely, 2^6651340 is an apocalyptic number.

It is an amenable number.

6651340 is an abundant number, since it is smaller than the sum of its proper divisors (7316516).

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

6651340 is a wasteful number, since it uses less digits than its factorization.

6651340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332576 (or 332574 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 6651340 is about 2579.0191934144. The cubic root of 6651340 is about 188.0628656516.

The spelling of 6651340 in words is "six million, six hundred fifty-one thousand, three hundred forty".