621303418 has 16 divisors (see below), whose sum is σ = 958430880. Its totient is φ = 301936336.

The previous prime is 621303413. The next prime is 621303421. The reversal of 621303418 is 814303126.

It is not an unprimeable number, because it can be changed into a prime (621303413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16048 + ... + 38731.

It is an arithmetic number, because the mean of its divisors is an integer number (59901930).

Almost surely, 2^621303418 is an apocalyptic number.

621303418 is a deficient number, since it is larger than the sum of its proper divisors (337127462).

621303418 is a wasteful number, since it uses less digits than its factorization.

621303418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54941.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 621303418 is about 24925.9587177705. The cubic root of 621303418 is about 853.2990214814.

It can be divided in two parts, 621 and 303418, that multiplied together give a triangular number (188422578 = T₁₉₄₁₂).

The spelling of 621303418 in words is "six hundred twenty-one million, three hundred three thousand, four hundred eighteen".