621710674 has 16 divisors (see below), whose sum is σ = 1004756760. Its totient is φ = 286813440.

The previous prime is 621710669. The next prime is 621710681. The reversal of 621710674 is 476017126.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 480267225 + 141443449 = 21915^2 + 11893^2 .

It is an unprimeable number.

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, 76444 + ... + 84184.

Almost surely, 2^621710674 is an apocalyptic number.

621710674 is a deficient number, since it is larger than the sum of its proper divisors (383046086).

621710674 is a wasteful number, since it uses less digits than its factorization.

621710674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10845.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 621710674 is about 24934.1266941515. The cubic root of 621710674 is about 853.4854227545.

The spelling of 621710674 in words is "six hundred twenty-one million, seven hundred ten thousand, six hundred seventy-four".