621382 has 8 divisors (see below), whose sum is σ = 941976. Its totient is φ = 307392.

The previous prime is 621371. The next prime is 621389. The reversal of 621382 is 283126.

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

It is a super-2 number, since 2×621382² = 772231179848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621389) by changing a digit.

621382 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, 1408 + ... + 1795.

It is an arithmetic number, because the mean of its divisors is an integer number (117747).

2⁶²¹³⁸² is an apocalyptic number.

621382 is a deficient number, since it is larger than the sum of its proper divisors (320594).

621382 is a wasteful number, since it uses less digits than its factorization.

621382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3302.

The product of its digits is 576, while the sum is 22.

The square root of 621382 is about 788.2778697896. The cubic root of 621382 is about 85.3334994843. Note that the first 3 decimals are identical.

It can be divided in two parts, 62 and 1382, that added together give a square (1444 = 38²).

The spelling of 621382 in words is "six hundred twenty-one thousand, three hundred eighty-two".