621000227 has 4 divisors (see below), whose sum is σ = 636146616. Its totient is φ = 605853840.

The previous prime is 621000223. The next prime is 621000239. The reversal of 621000227 is 722000126.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 722000126 = 2 ⋅361000063.

It is a cyclic number.

It is not a de Polignac number, because 621000227 - 2² = 621000223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 621000199 and 621000208.

It is not an unprimeable number, because it can be changed into a prime (621000223) 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 3 ways as a sum of consecutive naturals, for example, 7573133 + ... + 7573214.

It is an arithmetic number, because the mean of its divisors is an integer number (159036654).

Almost surely, 2^621000227 is an apocalyptic number.

621000227 is a deficient number, since it is larger than the sum of its proper divisors (15146389).

621000227 is a wasteful number, since it uses less digits than its factorization.

621000227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15146388.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 621000227 is about 24919.8761433519. The cubic root of 621000227 is about 853.1601979100.

The spelling of 621000227 in words is "six hundred twenty-one million, two hundred twenty-seven", and thus it is an aban number.