621430066 has 8 divisors (see below), whose sum is σ = 953823024. Its totient is φ = 303489060.

The previous prime is 621430063. The next prime is 621430079. The reversal of 621430066 is 660034126.

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

It is not an unprimeable number, because it can be changed into a prime (621430063) by changing a digit.

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, 3612880 + ... + 3613051.

It is an arithmetic number, because the mean of its divisors is an integer number (119227878).

Almost surely, 2^621430066 is an apocalyptic number.

621430066 is a deficient number, since it is larger than the sum of its proper divisors (332392958).

621430066 is a wasteful number, since it uses less digits than its factorization.

621430066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7225976.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 621430066 is about 24928.4990723469. The cubic root of 621430066 is about 853.3569970583.

The spelling of 621430066 in words is "six hundred twenty-one million, four hundred thirty thousand, sixty-six".