628650227 has 2 divisors, whose sum is σ = 628650228. Its totient is φ = 628650226.

The previous prime is 628650203. The next prime is 628650277. The reversal of 628650227 is 722056826.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628650227 is a prime.

It is a super-2 number, since 2×628650227² = 790402215814303058, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (628650277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314325113 + 314325114.

It is an arithmetic number, because the mean of its divisors is an integer number (314325114).

Almost surely, 2^628650227 is an apocalyptic number.

628650227 is a deficient number, since it is larger than the sum of its proper divisors (1).

628650227 is an equidigital number, since it uses as much as digits as its factorization.

628650227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 628650227 is about 25072.8982568829. The cubic root of 628650227 is about 856.6492235207.

The spelling of 628650227 in words is "six hundred twenty-eight million, six hundred fifty thousand, two hundred twenty-seven".