6743540 has 24 divisors (see below), whose sum is σ = 14250600. Its totient is φ = 2680448.

The previous prime is 6743533. The next prime is 6743563. The reversal of 6743540 is 453476.

It can be written as a sum of positive squares in 4 ways, for example, as 2972176 + 3771364 = 1724^2 + 1942^2 .

It is an Ulam number.

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, 2486 + ... + 4434.

It is an arithmetic number, because the mean of its divisors is an integer number (593775).

Almost surely, 2^6743540 is an apocalyptic number.

It is an amenable number.

6743540 is an abundant number, since it is smaller than the sum of its proper divisors (7507060).

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

6743540 is a wasteful number, since it uses less digits than its factorization.

6743540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131 (or 2129 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 6743540 is about 2596.8326861775. The cubic root of 6743540 is about 188.9278486855.

Subtracting from 6743540 its reverse (453476), we obtain a square (6290064 = 2508²).

The spelling of 6743540 in words is "six million, seven hundred forty-three thousand, five hundred forty".