621441734 has 16 divisors (see below), whose sum is σ = 940743168. Its totient is φ = 307867392.

The previous prime is 621441731. The next prime is 621441757. The reversal of 621441734 is 437144126.

It is a self number, because there is not a number n which added to its sum of digits gives 621441734.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621441731) 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, 307094 + ... + 309110.

It is an arithmetic number, because the mean of its divisors is an integer number (58796448).

Almost surely, 2^621441734 is an apocalyptic number.

621441734 is a deficient number, since it is larger than the sum of its proper divisors (319301434).

621441734 is a wasteful number, since it uses less digits than its factorization.

621441734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3359.

The product of its digits is 16128, while the sum is 32.

The square root of 621441734 is about 24928.7331005809. The cubic root of 621441734 is about 853.3623379152.

The spelling of 621441734 in words is "six hundred twenty-one million, four hundred forty-one thousand, seven hundred thirty-four".