662641 has 8 divisors (see below), whose sum is σ = 762944. Its totient is φ = 563760.

The previous prime is 662639. The next prime is 662647. The reversal of 662641 is 146266.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 662641 - 2¹ = 662639 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 1006 + ... + 1528.

It is an arithmetic number, because the mean of its divisors is an integer number (95368).

2⁶⁶²⁶⁴¹ is an apocalyptic number.

It is an amenable number.

662641 is a deficient number, since it is larger than the sum of its proper divisors (100303).

662641 is a wasteful number, since it uses less digits than its factorization.

662641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711.

The product of its digits is 1728, while the sum is 25.

The square root of 662641 is about 814.0276408083. The cubic root of 662641 is about 87.1818541627.

The spelling of 662641 in words is "six hundred sixty-two thousand, six hundred forty-one".