420662 has 8 divisors (see below), whose sum is σ = 688392. Its totient is φ = 191200.

The previous prime is 420613. The next prime is 420671. The reversal of 420662 is 266024.

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

It is a congruent number.

It is an unprimeable number.

420662 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 9539 + ... + 9582.

It is an arithmetic number, because the mean of its divisors is an integer number (86049).

2⁴²⁰⁶⁶² is an apocalyptic number.

420662 is a deficient number, since it is larger than the sum of its proper divisors (267730).

420662 is a wasteful number, since it uses less digits than its factorization.

420662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19134.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 420662 is about 648.5846128301. The cubic root of 420662 is about 74.9280495156.

Adding to 420662 its reverse (266024), we get a palindrome (686686).

The spelling of 420662 in words is "four hundred twenty thousand, six hundred sixty-two".