621460 has 48 divisors (see below), whose sum is σ = 1564416. Its totient is φ = 202752.

The previous prime is 621451. The next prime is 621461. The reversal of 621460 is 64126.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3124 + ... + 3316.

It is an arithmetic number, because the mean of its divisors is an integer number (32592).

2⁶²¹⁴⁶⁰ 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 621460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (782208).

621460 is an abundant number, since it is smaller than the sum of its proper divisors (942956).

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

621460 is a wasteful number, since it uses less digits than its factorization.

621460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 621460 is about 788.3273431767. The cubic root of 621460 is about 85.3370698776.

Adding to 621460 its reverse (64126), we get a palindrome (685586).

It can be divided in two parts, 621 and 460, that added together give a triangular number (1081 = T₄₆).

The spelling of 621460 in words is "six hundred twenty-one thousand, four hundred sixty".