540664 has 16 divisors (see below), whose sum is σ = 1067400.
Its totient is φ = 256032.
The previous prime is 540629. The next prime is 540677. The reversal of 540664 is 466045.
540664 = T229 + T230 + ... +
It is a happy number.
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 3 ways as a sum of consecutive naturals, for example, 1627 + ... + 1930.
2540664 is an apocalyptic number.
It is an amenable number.
540664 is a deficient number, since it is larger than the sum of its proper divisors (526736).
540664 is a wasteful number, since it uses less digits than its factorization.
540664 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3582 (or 3578 counting only the distinct ones).
The product of its (nonzero) digits is 2880, while the sum is 25.
The square root of 540664 is about 735.2985788100.
The cubic root of 540664 is about 81.4658921099.
The spelling of 540664 in words is "five hundred forty thousand, six hundred sixty-four".