662642 has 8 divisors (see below), whose sum is σ = 1018332. Its totient is φ = 323200.

The previous prime is 662639. The next prime is 662647. The reversal of 662642 is 246266.

It can be written as a sum of positive squares in 2 ways, for example, as 579121 + 83521 = 761^2 + 289^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (662647) 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, 3959 + ... + 4122.

2⁶⁶²⁶⁴² is an apocalyptic number.

662642 is a deficient number, since it is larger than the sum of its proper divisors (355690).

662642 is a wasteful number, since it uses less digits than its factorization.

662642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8124.

The product of its digits is 3456, while the sum is 26.

The square root of 662642 is about 814.0282550379. The cubic root of 662642 is about 87.1818980184.

It can be divided in two parts, 66264 and 2, that added together give a palindrome (66266).

The spelling of 662642 in words is "six hundred sixty-two thousand, six hundred forty-two".