540626 has 16 divisors (see below), whose sum is σ = 876960. Its totient is φ = 249120.

The previous prime is 540619. The next prime is 540629. The reversal of 540626 is 626045.

It is not an unprimeable number, because it can be changed into a prime (540629) by changing a digit.

540626 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 7 ways as a sum of consecutive naturals, for example, 1385 + ... + 1731.

It is an arithmetic number, because the mean of its divisors is an integer number (54810).

2⁵⁴⁰⁶²⁶ is an apocalyptic number.

540626 is a deficient number, since it is larger than the sum of its proper divisors (336334).

540626 is a wasteful number, since it uses less digits than its factorization.

540626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 540626 is about 735.2727385127. The cubic root of 540626 is about 81.4639834837.

The spelling of 540626 in words is "five hundred forty thousand, six hundred twenty-six".