6541650 has 36 divisors (see below), whose sum is σ = 17576442. Its totient is φ = 1744320.

The previous prime is 6541621. The next prime is 6541663. The reversal of 6541650 is 561456.

It is a happy number.

6541650 is a `hidden beast` number, since 6 + 5 + 4 + 1 + 650 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 4004001 + 2537649 = 2001^2 + 1593^2 .

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 6819 + ... + 7718.

Almost surely, 2^6541650 is an apocalyptic number.

6541650 is an abundant number, since it is smaller than the sum of its proper divisors (11034792).

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

6541650 is a wasteful number, since it uses less digits than its factorization.

6541650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14555 (or 14547 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 6541650 is about 2557.6649506923. The cubic root of 6541650 is about 187.0233225127.

It can be divided in two parts, 654 and 1650, that added together give a square (2304 = 48²).

The spelling of 6541650 in words is "six million, five hundred forty-one thousand, six hundred fifty".