6540536 has 8 divisors (see below), whose sum is σ = 12263520. Its totient is φ = 3270264.

The previous prime is 6540511. The next prime is 6540539. The reversal of 6540536 is 6350456.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×6540536² = 85557222334592, which contains 22 as substring.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 6540499 and 6540508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6540539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408776 + ... + 408791.

It is an arithmetic number, because the mean of its divisors is an integer number (1532940).

Almost surely, 2^6540536 is an apocalyptic number.

It is an amenable number.

6540536 is a deficient number, since it is larger than the sum of its proper divisors (5722984).

6540536 is a wasteful number, since it uses less digits than its factorization.

6540536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817573 (or 817569 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 6540536 is about 2557.4471646546. The cubic root of 6540536 is about 187.0127056291.

The spelling of 6540536 in words is "six million, five hundred forty thousand, five hundred thirty-six".