6751640 has 32 divisors (see below), whose sum is σ = 17362080. Its totient is φ = 2314752.

The previous prime is 6751573. The next prime is 6751651. The reversal of 6751640 is 461576.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11777 + ... + 12336.

It is an arithmetic number, because the mean of its divisors is an integer number (542565).

Almost surely, 2^6751640 is an apocalyptic number.

It is an amenable number.

6751640 is an abundant number, since it is smaller than the sum of its proper divisors (10610440).

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

6751640 is a wasteful number, since it uses less digits than its factorization.

6751640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24131 (or 24127 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 6751640 is about 2598.3918103319. The cubic root of 6751640 is about 189.0034619524.

Subtracting from 6751640 its reverse (461576), we obtain a square (6290064 = 2508²).

The spelling of 6751640 in words is "six million, seven hundred fifty-one thousand, six hundred forty".