6540437 has 4 divisors (see below), whose sum is σ = 6590496. Its totient is φ = 6490380.

The previous prime is 6540433. The next prime is 6540451. The reversal of 6540437 is 7340456.

6540437 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6540437 - 2² = 6540433 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6540431) 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, 24833 + ... + 25094.

It is an arithmetic number, because the mean of its divisors is an integer number (1647624).

Almost surely, 2^6540437 is an apocalyptic number.

It is an amenable number.

6540437 is a deficient number, since it is larger than the sum of its proper divisors (50059).

6540437 is a wasteful number, since it uses less digits than its factorization.

6540437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50058.

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

The square root of 6540437 is about 2557.4278093428. The cubic root of 6540437 is about 187.0117620596.

The spelling of 6540437 in words is "six million, five hundred forty thousand, four hundred thirty-seven".