662489 has 4 divisors (see below), whose sum is σ = 666624. Its totient is φ = 658356.

The previous prime is 662483. The next prime is 662491. The reversal of 662489 is 984266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-662489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (662483) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1817 + ... + 2150.

It is an arithmetic number, because the mean of its divisors is an integer number (166656).

2⁶⁶²⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

662489 is a deficient number, since it is larger than the sum of its proper divisors (4135).

662489 is a wasteful number, since it uses less digits than its factorization.

662489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4134.

The product of its digits is 20736, while the sum is 35.

The square root of 662489 is about 813.9342725307. The cubic root of 662489 is about 87.1751875789.

The spelling of 662489 in words is "six hundred sixty-two thousand, four hundred eighty-nine".