621362305 has 4 divisors (see below), whose sum is σ = 745634772. Its totient is φ = 497089840.

The previous prime is 621362243. The next prime is 621362327. The reversal of 621362305 is 503263126.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 377252929 + 244109376 = 19423^2 + 15624^2 .

It is not a de Polignac number, because 621362305 - 2¹⁵ = 621329537 is a prime.

It is a super-2 number, since 2×621362305² = 772182228149826050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 62136226 + ... + 62136235.

It is an arithmetic number, because the mean of its divisors is an integer number (186408693).

Almost surely, 2^621362305 is an apocalyptic number.

It is an amenable number.

621362305 is a deficient number, since it is larger than the sum of its proper divisors (124272467).

621362305 is a wasteful number, since it uses less digits than its factorization.

621362305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124272466.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 621362305 is about 24927.1399281987. The cubic root of 621362305 is about 853.3259791270.

The spelling of 621362305 in words is "six hundred twenty-one million, three hundred sixty-two thousand, three hundred five".