621468 has 36 divisors (see below), whose sum is σ = 1602328. Its totient is φ = 203040.

The previous prime is 621461. The next prime is 621473. The reversal of 621468 is 864126.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2055 + ... + 2337.

2⁶²¹⁴⁶⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 621468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (801164).

621468 is an abundant number, since it is smaller than the sum of its proper divisors (980860).

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

621468 is a wasteful number, since it uses less digits than its factorization.

621468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 349 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 621468 is about 788.3324171947. The cubic root of 621468 is about 85.3374360549.

It can be divided in two parts, 621 and 468, that added together give a square (1089 = 33²).

The spelling of 621468 in words is "six hundred twenty-one thousand, four hundred sixty-eight".