628232999 has 2 divisors, whose sum is σ = 628233000. Its totient is φ = 628232998.

The previous prime is 628232989. The next prime is 628233049. The reversal of 628232999 is 999232826.

It is an a-pointer prime, because the next prime (628233049) can be obtained adding 628232999 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 628232999 - 2¹² = 628228903 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628232939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314116499 + 314116500.

It is an arithmetic number, because the mean of its divisors is an integer number (314116500).

Almost surely, 2^628232999 is an apocalyptic number.

628232999 is a deficient number, since it is larger than the sum of its proper divisors (1).

628232999 is an equidigital number, since it uses as much as digits as its factorization.

628232999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 50.

The square root of 628232999 is about 25064.5765773133. The cubic root of 628232999 is about 856.4596654658.

The spelling of 628232999 in words is "six hundred twenty-eight million, two hundred thirty-two thousand, nine hundred ninety-nine".