621248 has 28 divisors (see below), whose sum is σ = 1307592. Its totient is φ = 291840.

The previous prime is 621241. The next prime is 621259. The reversal of 621248 is 842126.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (621241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 803 + ... + 1373.

2⁶²¹²⁴⁸ is an apocalyptic number.

621248 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 621248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (653796).

621248 is an abundant number, since it is smaller than the sum of its proper divisors (686344).

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

621248 is a wasteful number, since it uses less digits than its factorization.

621248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600 (or 590 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

The square root of 621248 is about 788.1928697977. The cubic root of 621248 is about 85.3273650340.

The spelling of 621248 in words is "six hundred twenty-one thousand, two hundred forty-eight".