621143413 has 8 divisors (see below), whose sum is σ = 678182400. Its totient is φ = 564199680.

The previous prime is 621143401. The next prime is 621143423. The reversal of 621143413 is 314341126.

621143413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-621143413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621143423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9813 + ... + 36586.

It is an arithmetic number, because the mean of its divisors is an integer number (84772800).

Almost surely, 2^621143413 is an apocalyptic number.

It is an amenable number.

621143413 is a deficient number, since it is larger than the sum of its proper divisors (57038987).

621143413 is a wasteful number, since it uses less digits than its factorization.

621143413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47627.

The product of its digits is 1728, while the sum is 25.

The square root of 621143413 is about 24922.7489053676. The cubic root of 621143413 is about 853.2257648256.

Adding to 621143413 its reverse (314341126), we get a palindrome (935484539).

The spelling of 621143413 in words is "six hundred twenty-one million, one hundred forty-three thousand, four hundred thirteen".