621945201 has 8 divisors (see below), whose sum is σ = 829403104. Its totient is φ = 414558720.

The previous prime is 621945169. The next prime is 621945211. The reversal of 621945201 is 102549126.

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

It is not a de Polignac number, because 621945201 - 2⁵ = 621945169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (621945211) 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 7 ways as a sum of consecutive naturals, for example, 7686 + ... + 36096.

It is an arithmetic number, because the mean of its divisors is an integer number (103675388).

Almost surely, 2^621945201 is an apocalyptic number.

It is an amenable number.

621945201 is a deficient number, since it is larger than the sum of its proper divisors (207457903).

621945201 is a wasteful number, since it uses less digits than its factorization.

621945201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35711.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 621945201 is about 24938.8291826220. The cubic root of 621945201 is about 853.5927289448.

The spelling of 621945201 in words is "six hundred twenty-one million, nine hundred forty-five thousand, two hundred one".