621338 has 16 divisors (see below), whose sum is σ = 997920. Its totient is φ = 289296.

The previous prime is 621337. The next prime is 621343. The reversal of 621338 is 833126.

It is not an unprimeable number, because it can be changed into a prime (621337) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3056 + ... + 3252.

It is an arithmetic number, because the mean of its divisors is an integer number (62370).

2⁶²¹³³⁸ is an apocalyptic number.

621338 is a deficient number, since it is larger than the sum of its proper divisors (376582).

621338 is a wasteful number, since it uses less digits than its factorization.

621338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301.

The product of its digits is 864, while the sum is 23.

The square root of 621338 is about 788.2499603552. The cubic root of 621338 is about 85.3314852844.

It can be divided in two parts, 621 and 338, that added together give a palindrome (959).

The spelling of 621338 in words is "six hundred twenty-one thousand, three hundred thirty-eight".