662420 has 24 divisors (see below), whose sum is σ = 1518048. Its totient is φ = 240800.

The previous prime is 662407. The next prime is 662443. The reversal of 662420 is 24266.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 662392 and 662401.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 662420.

It is an unprimeable number.

662420 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1286 + ... + 1725.

It is an arithmetic number, because the mean of its divisors is an integer number (63252).

2⁶⁶²⁴²⁰ is an apocalyptic number.

It is an amenable number.

662420 is an abundant number, since it is smaller than the sum of its proper divisors (855628).

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

662420 is a wasteful number, since it uses less digits than its factorization.

662420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3031 (or 3029 counting only the distinct ones).

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

The square root of 662420 is about 813.8918847120. The cubic root of 662420 is about 87.1721609642.

Adding to 662420 its reverse (24266), we get a palindrome (686686).

It can be divided in two parts, 6 and 62420, that added together give a palindrome (62426).

The spelling of 662420 in words is "six hundred sixty-two thousand, four hundred twenty".