620450 has 12 divisors (see below), whose sum is σ = 1154130. Its totient is φ = 248160.

The previous prime is 620441. The next prime is 620461. The reversal of 620450 is 54026.

620450 is nontrivially palindromic in base 7.

It can be written as a sum of positive squares in 3 ways, for example, as 273529 + 346921 = 523^2 + 589^2 .

It is an unprimeable number.

620450 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 5 ways as a sum of consecutive naturals, for example, 6155 + ... + 6254.

2⁶²⁰⁴⁵⁰ is an apocalyptic number.

620450 is a deficient number, since it is larger than the sum of its proper divisors (533680).

620450 is a wasteful number, since it uses less digits than its factorization.

620450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12421 (or 12416 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 620450 is about 787.6864858559. The cubic root of 620450 is about 85.2908147284.

Adding to 620450 its reverse (54026), we get a palindrome (674476).

The spelling of 620450 in words is "six hundred twenty thousand, four hundred fifty".