628264249 has 2 divisors, whose sum is σ = 628264250. Its totient is φ = 628264248.

The previous prime is 628264243. The next prime is 628264277. The reversal of 628264249 is 942462826.

628264249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 564775225 + 63489024 = 23765^2 + 7968^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628264249 is a prime.

It is not a weakly prime, because it can be changed into another prime (628264243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314132124 + 314132125.

It is an arithmetic number, because the mean of its divisors is an integer number (314132125).

Almost surely, 2^628264249 is an apocalyptic number.

It is an amenable number.

628264249 is a deficient number, since it is larger than the sum of its proper divisors (1).

628264249 is an equidigital number, since it uses as much as digits as its factorization.

628264249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 43.

The square root of 628264249 is about 25065.1999593061. The cubic root of 628264249 is about 856.4738660998.

The spelling of 628264249 in words is "six hundred twenty-eight million, two hundred sixty-four thousand, two hundred forty-nine".