662440 has 16 divisors (see below), whose sum is σ = 1490580. Its totient is φ = 264960.

The previous prime is 662407. The next prime is 662443. The reversal of 662440 is 44266.

It can be written as a sum of positive squares in 2 ways, for example, as 580644 + 81796 = 762^2 + 286^2 .

It is not an unprimeable number, because it can be changed into a prime (662443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8241 + ... + 8320.

2⁶⁶²⁴⁴⁰ is an apocalyptic number.

It is an amenable number.

662440 is an abundant number, since it is smaller than the sum of its proper divisors (828140).

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

662440 is a wasteful number, since it uses less digits than its factorization.

662440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16572 (or 16568 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 662440 is about 813.9041712634. The cubic root of 662440 is about 87.1730382655.

The spelling of 662440 in words is "six hundred sixty-two thousand, four hundred forty".