662540 has 24 divisors (see below), whose sum is σ = 1406832. Its totient is φ = 262080.

The previous prime is 662539. The next prime is 662551. The reversal of 662540 is 45266.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 662540.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3035 + ... + 3245.

It is an arithmetic number, because the mean of its divisors is an integer number (58618).

2⁶⁶²⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

662540 is an abundant number, since it is smaller than the sum of its proper divisors (744292).

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

662540 is a wasteful number, since it uses less digits than its factorization.

662540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377 (or 375 counting only the distinct ones).

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

The square root of 662540 is about 813.9656012388. The cubic root of 662540 is about 87.1774245068.

The spelling of 662540 in words is "six hundred sixty-two thousand, five hundred forty".