621105260 has 24 divisors (see below), whose sum is σ = 1311158016. Its totient is φ = 247139840.

The previous prime is 621105241. The next prime is 621105263. The reversal of 621105260 is 62501126.

It is not an unprimeable number, because it can be changed into a prime (621105263) 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 7 ways as a sum of consecutive naturals, for example, 77477 + ... + 85116.

It is an arithmetic number, because the mean of its divisors is an integer number (54631584).

Almost surely, 2^621105260 is an apocalyptic number.

It is an amenable number.

621105260 is an abundant number, since it is smaller than the sum of its proper divisors (690052756).

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

621105260 is a wasteful number, since it uses less digits than its factorization.

621105260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162793 (or 162791 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 621105260 is about 24921.9834684160. The cubic root of 621105260 is about 853.2082950065.

Adding to 621105260 its reverse (62501126), we get a palindrome (683606386).

The spelling of 621105260 in words is "six hundred twenty-one million, one hundred five thousand, two hundred sixty".