622620646 has 8 divisors (see below), whose sum is σ = 945753120. Its totient is φ = 307369608.

The previous prime is 622620641. The next prime is 622620673. The reversal of 622620646 is 646026226.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622620641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1970161 + ... + 1970476.

It is an arithmetic number, because the mean of its divisors is an integer number (118219140).

Almost surely, 2^622620646 is an apocalyptic number.

622620646 is a deficient number, since it is larger than the sum of its proper divisors (323132474).

622620646 is a wasteful number, since it uses less digits than its factorization.

622620646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3940718.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 622620646 is about 24952.3675429808. The cubic root of 622620646 is about 853.9016234417.

The spelling of 622620646 in words is "six hundred twenty-two million, six hundred twenty thousand, six hundred forty-six".