6759640 has 16 divisors (see below), whose sum is σ = 15209280. Its totient is φ = 2703840.

The previous prime is 6759619. The next prime is 6759647. The reversal of 6759640 is 469576.

It is a self number, because there is not a number n which added to its sum of digits gives 6759640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6759647) 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 3 ways as a sum of consecutive naturals, for example, 84456 + ... + 84535.

It is an arithmetic number, because the mean of its divisors is an integer number (950580).

Almost surely, 2^6759640 is an apocalyptic number.

It is an amenable number.

6759640 is an abundant number, since it is smaller than the sum of its proper divisors (8449640).

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

6759640 is a wasteful number, since it uses less digits than its factorization.

6759640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169002 (or 168998 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 6759640 is about 2599.9307683090. The cubic root of 6759640 is about 189.0780823848.

Subtracting from 6759640 its product of nonzero digits (45360), we obtain a triangular number (6714280 = T₃₆₆₄).

Subtracting from 6759640 its reverse (469576), we obtain a square (6290064 = 2508²).

The spelling of 6759640 in words is "six million, seven hundred fifty-nine thousand, six hundred forty".