621355480 has 64 divisors (see below), whose sum is σ = 1475676000. Its totient is φ = 234814464.

The previous prime is 621355453. The next prime is 621355489. The reversal of 621355480 is 84553126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621355489) 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, 346426 + ... + 348214.

Almost surely, 2^621355480 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 621355480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (737838000).

621355480 is an abundant number, since it is smaller than the sum of its proper divisors (854320520).

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

621355480 is a wasteful number, since it uses less digits than its factorization.

621355480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276 (or 2272 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 621355480 is about 24927.0030288440. The cubic root of 621355480 is about 853.3228548247.

The spelling of 621355480 in words is "six hundred twenty-one million, three hundred fifty-five thousand, four hundred eighty".