620446 has 4 divisors (see below), whose sum is σ = 930672. Its totient is φ = 310222.

The previous prime is 620441. The next prime is 620461. The reversal of 620446 is 644026.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 644026 = 2 ⋅322013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155110 + ... + 155113.

It is an arithmetic number, because the mean of its divisors is an integer number (232668).

2⁶²⁰⁴⁴⁶ is an apocalyptic number.

620446 is a deficient number, since it is larger than the sum of its proper divisors (310226).

620446 is a wasteful number, since it uses less digits than its factorization.

620446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310225.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 620446 is about 787.6839467705. The cubic root of 620446 is about 85.2906314399.

The spelling of 620446 in words is "six hundred twenty thousand, four hundred forty-six".